1406 lines
29 KiB
C
1406 lines
29 KiB
C
/* $NetBSD: c_ksh.c,v 1.4 1998/11/04 18:27:20 christos Exp $ */
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/*
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* built-in Korn commands: c_*
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*/
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#include "sh.h"
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#include "ksh_stat.h"
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#include <ctype.h>
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int
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c_cd(wp)
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char **wp;
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{
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int optc;
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int physical = Flag(FPHYSICAL);
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int cdnode; /* was a node from cdpath added in? */
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int printpath = 0; /* print where we cd'd? */
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int rval;
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struct tbl *pwd_s, *oldpwd_s;
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XString xs;
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char *xp;
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char *dir, *try, *pwd;
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int phys_path;
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char *cdpath;
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while ((optc = ksh_getopt(wp, &builtin_opt, "LP")) != EOF)
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switch (optc) {
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case 'L':
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physical = 0;
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break;
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case 'P':
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physical = 1;
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break;
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case '?':
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return 1;
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}
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wp += builtin_opt.optind;
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if (Flag(FRESTRICTED)) {
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bi_errorf("restricted shell - can't cd");
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return 1;
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}
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pwd_s = global("PWD");
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oldpwd_s = global("OLDPWD");
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if (!wp[0]) {
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/* No arguments - go home */
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if ((dir = str_val(global("HOME"))) == null) {
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bi_errorf("no home directory (HOME not set)");
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return 1;
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}
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} else if (!wp[1]) {
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/* One argument: - or dir */
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dir = wp[0];
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if (strcmp(dir, "-") == 0) {
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dir = str_val(oldpwd_s);
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if (dir == null) {
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bi_errorf("no OLDPWD");
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return 1;
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}
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printpath++;
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}
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} else if (!wp[2]) {
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/* Two arguments - substitute arg1 in PWD for arg2 */
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int ilen, olen, nlen, elen;
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char *cp;
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if (!current_wd[0]) {
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bi_errorf("don't know current directory");
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return 1;
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}
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/* substitue arg1 for arg2 in current path.
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* if the first substitution fails because the cd fails
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* we could try to find another substitution. For now
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* we don't
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*/
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if ((cp = strstr(current_wd, wp[0])) == (char *) 0) {
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bi_errorf("bad substitution");
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return 1;
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}
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ilen = cp - current_wd;
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olen = strlen(wp[0]);
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nlen = strlen(wp[1]);
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elen = strlen(current_wd + ilen + olen) + 1;
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dir = alloc(ilen + nlen + elen, ATEMP);
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memcpy(dir, current_wd, ilen);
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memcpy(dir + ilen, wp[1], nlen);
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memcpy(dir + ilen + nlen, current_wd + ilen + olen, elen);
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printpath++;
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} else {
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bi_errorf("too many arguments");
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return 1;
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}
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Xinit(xs, xp, PATH, ATEMP);
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/* xp will have a bogus value after make_path() - set it to 0
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* so that if it's used, it will cause a dump
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*/
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xp = (char *) 0;
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cdpath = str_val(global("CDPATH"));
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do {
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cdnode = make_path(current_wd, dir, &cdpath, &xs, &phys_path);
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#ifdef S_ISLNK
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if (physical)
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rval = chdir(try = Xstring(xs, xp) + phys_path);
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else
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#endif /* S_ISLNK */
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{
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simplify_path(Xstring(xs, xp));
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rval = chdir(try = Xstring(xs, xp));
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}
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} while (rval < 0 && cdpath != (char *) 0);
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if (rval < 0) {
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if (cdnode)
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bi_errorf("%s: bad directory", dir);
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else
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bi_errorf("%s - %s", try, strerror(errno));
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return 1;
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}
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/* Clear out tracked aliases with relative paths */
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flushcom(0);
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/* Set OLDPWD */
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if (current_wd[0])
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setstr(oldpwd_s, current_wd);
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if (!ISABSPATH(Xstring(xs, xp))) {
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#ifdef OS2
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/* simplify_path() doesn't know about os/2's drive contexts,
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* so it can't set current_wd when changing to a:foo.
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* Handle this by calling getcwd()...
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*/
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pwd = ksh_get_wd((char *) 0, 0);
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#else /* OS2 */
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pwd = (char *) 0;
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#endif /* OS2 */
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} else
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#ifdef S_ISLNK
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if (!physical || !(pwd = get_phys_path(Xstring(xs, xp))))
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#endif /* S_ISLNK */
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pwd = Xstring(xs, xp);
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/* Set PWD */
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if (pwd) {
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set_current_wd(pwd);
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setstr(pwd_s, pwd);
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} else {
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set_current_wd(null);
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pwd = Xstring(xs, xp);
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/* XXX unset $PWD? */
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}
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if (printpath || cdnode)
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shprintf("%s\n", pwd);
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return 0;
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}
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int
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c_pwd(wp)
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char **wp;
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{
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int optc;
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int physical = Flag(FPHYSICAL);
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char *p;
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while ((optc = ksh_getopt(wp, &builtin_opt, "LP")) != EOF)
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switch (optc) {
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case 'L':
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physical = 0;
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break;
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case 'P':
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physical = 1;
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break;
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case '?':
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return 1;
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}
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wp += builtin_opt.optind;
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if (wp[0]) {
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bi_errorf("too many arguments");
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return 1;
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}
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#ifdef S_ISLNK
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p = current_wd[0] ? (physical ? get_phys_path(current_wd) : current_wd)
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: (char *) 0;
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#else /* S_ISLNK */
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p = current_wd[0] ? current_wd : (char *) 0;
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#endif /* S_ISLNK */
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if (p && eaccess(p, R_OK) < 0)
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p = (char *) 0;
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if (!p) {
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p = ksh_get_wd((char *) 0, 0);
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if (!p) {
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bi_errorf("can't get current directory - %s",
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strerror(errno));
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return 1;
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}
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}
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shprintf("%s\n", p);
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return 0;
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}
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int
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c_print(wp)
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char **wp;
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{
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#define PO_NL BIT(0) /* print newline */
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#define PO_EXPAND BIT(1) /* expand backslash sequences */
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#define PO_PMINUSMINUS BIT(2) /* print a -- argument */
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#define PO_HIST BIT(3) /* print to history instead of stdout */
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#define PO_COPROC BIT(4) /* printing to coprocess: block SIGPIPE */
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#define PO_FSLASH BIT(5) /* swap slash for backslash (for os2 ) */
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int fd = 1;
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int flags = PO_EXPAND|PO_NL;
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char *s;
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const char *emsg;
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XString xs;
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char *xp;
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if (wp[0][0] == 'e') { /* echo command */
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int nflags = flags;
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/* A compromise between sysV and BSD echo commands:
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* escape sequences are enabled by default, and
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* -n, -e and -E are recognized if they appear
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* in arguments with no illegal options (ie, echo -nq
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* will print -nq).
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* Different from sysV echo since options are recognized,
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* different from BSD echo since escape sequences are enabled
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* by default.
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*/
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wp += 1;
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while ((s = *wp) && *s == '-' && s[1]) {
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while (*++s)
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if (*s == 'n')
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nflags &= ~PO_NL;
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else if (*s == 'e')
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nflags |= PO_EXPAND;
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else if (*s == 'E')
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nflags &= ~PO_EXPAND;
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else
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/* bad option: don't use nflags, print
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* argument
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*/
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break;
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if (*s)
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break;
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wp++;
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flags = nflags;
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}
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} else {
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int optc;
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#if OS2
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const char *options = "Rnpfrsu,"; /* added f flag */
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#else
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const char *options = "Rnprsu,";
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#endif
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while ((optc = ksh_getopt(wp, &builtin_opt, options)) != EOF)
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switch (optc) {
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case 'R': /* fake BSD echo command */
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flags |= PO_PMINUSMINUS;
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flags &= ~PO_EXPAND;
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options = "ne";
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break;
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case 'e':
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flags |= PO_EXPAND;
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break;
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#ifdef OS2
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case 'f':
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flags |= PO_FSLASH;
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break;
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#endif
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case 'n':
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flags &= ~PO_NL;
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break;
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#ifdef KSH
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case 'p':
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if ((fd = coproc_getfd(W_OK, &emsg)) < 0) {
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bi_errorf("-p: %s", emsg);
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return 1;
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}
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break;
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#endif /* KSH */
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case 'r':
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flags &= ~PO_EXPAND;
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break;
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case 's':
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flags |= PO_HIST;
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break;
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case 'u':
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if (!*(s = builtin_opt.optarg))
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fd = 0;
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else if ((fd = check_fd(s, W_OK, &emsg)) < 0) {
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bi_errorf("-u: %s: %s", s, emsg);
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return 1;
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}
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break;
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case '?':
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return 1;
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}
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if (!(builtin_opt.info & GI_MINUSMINUS)) {
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/* treat a lone - like -- */
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if (wp[builtin_opt.optind]
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&& strcmp(wp[builtin_opt.optind], "-") == 0)
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builtin_opt.optind++;
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} else if (flags & PO_PMINUSMINUS)
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builtin_opt.optind--;
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wp += builtin_opt.optind;
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}
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Xinit(xs, xp, 128, ATEMP);
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while (*wp != NULL) {
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register int c;
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s = *wp;
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while ((c = *s++) != '\0') {
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Xcheck(xs, xp);
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#ifdef OS2
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if ((flags & PO_FSLASH) && c == '\\')
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if (*s == '\\')
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*s++;
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else
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c = '/';
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#endif /* OS2 */
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if ((flags & PO_EXPAND) && c == '\\') {
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int i;
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switch ((c = *s++)) {
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/* Oddly enough, \007 seems more portable than
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* \a (due to HP-UX cc, Ultrix cc, old pcc's,
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* etc.).
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*/
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case 'a': c = '\007'; break;
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case 'b': c = '\b'; break;
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case 'c': flags &= ~PO_NL;
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continue; /* AT&T brain damage */
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case 'f': c = '\f'; break;
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case 'n': c = '\n'; break;
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case 'r': c = '\r'; break;
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case 't': c = '\t'; break;
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case 'v': c = 0x0B; break;
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case '0':
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/* Look for an octal number: can have
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* three digits (not counting the
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* leading 0). Truely burnt.
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*/
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c = 0;
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for (i = 0; i < 3; i++) {
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if (*s >= '0' && *s <= '7')
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c = c*8 + *s++ - '0';
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else
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break;
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}
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break;
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case '\0': s--; c = '\\'; break;
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case '\\': break;
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default:
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Xput(xs, xp, '\\');
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}
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}
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Xput(xs, xp, c);
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}
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if (*++wp != NULL)
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Xput(xs, xp, ' ');
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}
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if (flags & PO_NL)
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Xput(xs, xp, '\n');
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if (flags & PO_HIST) {
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Xput(xs, xp, '\0');
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source->line++;
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histsave(source->line, Xstring(xs, xp), 1);
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Xfree(xs, xp);
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} else {
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int n, len = Xlength(xs, xp);
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#ifdef KSH
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int UNINITIALIZED(opipe);
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/* Ensure we aren't killed by a SIGPIPE while writing to
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* a coprocess. at&t ksh doesn't seem to do this (seems
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* to just check that the co-process is alive, which is
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* not enough).
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*/
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if (coproc.write >= 0 && coproc.write == fd) {
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flags |= PO_COPROC;
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opipe = block_pipe();
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}
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#endif /* KSH */
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for (s = Xstring(xs, xp); len > 0; ) {
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n = write(fd, s, len);
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if (n < 0) {
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#ifdef KSH
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if (flags & PO_COPROC)
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restore_pipe(opipe);
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#endif /* KSH */
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if (errno == EINTR) {
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/* allow user to ^C out */
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intrcheck();
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#ifdef KSH
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if (flags & PO_COPROC)
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opipe = block_pipe();
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#endif /* KSH */
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continue;
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}
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#ifdef KSH
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/* This doesn't really make sense - could
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* break scripts (print -p generates
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* error message).
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*if (errno == EPIPE)
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* coproc_write_close(fd);
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*/
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#endif /* KSH */
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return 1;
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}
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s += n;
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len -= n;
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}
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#ifdef KSH
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if (flags & PO_COPROC)
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restore_pipe(opipe);
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#endif /* KSH */
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}
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return 0;
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}
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int
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c_whence(wp)
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char **wp;
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{
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struct tbl *tp;
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char *id;
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int pflag = 0, vflag = 0, Vflag = 0;
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int ret = 0;
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int optc;
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int iam_whence = wp[0][0] == 'w';
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int fcflags;
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const char *options = iam_whence ? "pv" : "pvV";
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while ((optc = ksh_getopt(wp, &builtin_opt, options)) != EOF)
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switch (optc) {
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case 'p':
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pflag = 1;
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break;
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case 'v':
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vflag = 1;
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break;
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case 'V':
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Vflag = 1;
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break;
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case '?':
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return 1;
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}
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wp += builtin_opt.optind;
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fcflags = FC_BI | FC_PATH | FC_FUNC;
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if (!iam_whence) {
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/* Note that -p on its own is deal with in comexec() */
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if (pflag)
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fcflags |= FC_DEFPATH;
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/* Convert command options to whence options - note that
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* command -pV uses a different path search than whence -v
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* or whence -pv. This should be considered a feature.
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*/
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vflag = Vflag;
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}
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if (pflag)
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fcflags &= ~(FC_BI | FC_FUNC);
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while ((vflag || ret == 0) && (id = *wp++) != NULL) {
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tp = NULL;
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if ((iam_whence || vflag) && !pflag)
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tp = tsearch(&keywords, id, hash(id));
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if (!tp && !pflag) {
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tp = tsearch(&aliases, id, hash(id));
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if (tp && !(tp->flag & ISSET))
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tp = NULL;
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}
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if (!tp)
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tp = findcom(id, fcflags);
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if (vflag || (tp->type != CALIAS && tp->type != CEXEC
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&& tp->type != CTALIAS))
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shprintf("%s", id);
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switch (tp->type) {
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case CKEYWD:
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if (vflag)
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shprintf(" is a reserved word");
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break;
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case CALIAS:
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if (vflag)
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shprintf(" is an %salias for ",
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(tp->flag & EXPORT) ? "exported "
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: null);
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if (!iam_whence && !vflag)
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shprintf("alias %s=", id);
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print_value_quoted(tp->val.s);
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break;
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case CFUNC:
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if (vflag) {
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shprintf(" is a");
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if (tp->flag & EXPORT)
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shprintf("n exported");
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if (tp->flag & TRACE)
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shprintf(" traced");
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if (!(tp->flag & ISSET)) {
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shprintf(" undefined");
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if (tp->u.fpath)
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shprintf(" (autoload from %s)",
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tp->u.fpath);
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}
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shprintf(" function");
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}
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break;
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case CSHELL:
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if (vflag)
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shprintf(" is a%s shell builtin",
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(tp->flag & SPEC_BI) ? " special" : null);
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break;
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case CTALIAS:
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case CEXEC:
|
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if (tp->flag & ISSET) {
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if (vflag) {
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shprintf(" is ");
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if (tp->type == CTALIAS)
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shprintf(
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"a tracked %salias for ",
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(tp->flag & EXPORT) ?
|
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"exported "
|
|
: null);
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}
|
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shprintf("%s", tp->val.s);
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} else {
|
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if (vflag)
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shprintf(" not found");
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ret = 1;
|
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}
|
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break;
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default:
|
|
shprintf("%s is *GOK*", id);
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break;
|
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}
|
|
if (vflag || !ret)
|
|
shprintf(newline);
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
/* Deal with command -vV - command -p dealt with in comexec() */
|
|
int
|
|
c_command(wp)
|
|
char **wp;
|
|
{
|
|
/* Let c_whence do the work. Note that c_command() must be
|
|
* a distinct function from c_whence() (tested in comexec()).
|
|
*/
|
|
return c_whence(wp);
|
|
}
|
|
|
|
/* typeset, export, and readonly */
|
|
int
|
|
c_typeset(wp)
|
|
char **wp;
|
|
{
|
|
struct block *l = e->loc;
|
|
struct tbl *vp, **p;
|
|
Tflag fset = 0, fclr = 0;
|
|
int thing = 0, func = 0, local = 0;
|
|
const char *options = "L#R#UZ#fi#lrtux"; /* see comment below */
|
|
char *fieldstr, *basestr;
|
|
int field, base;
|
|
int optc;
|
|
Tflag flag;
|
|
int pflag = 0;
|
|
|
|
switch (**wp) {
|
|
case 'e': /* export */
|
|
fset |= EXPORT;
|
|
options = "p";
|
|
break;
|
|
case 'r': /* readonly */
|
|
fset |= RDONLY;
|
|
options = "p";
|
|
break;
|
|
case 's': /* set */
|
|
/* called with 'typeset -' */
|
|
break;
|
|
case 't': /* typeset */
|
|
local = 1;
|
|
break;
|
|
}
|
|
|
|
fieldstr = basestr = (char *) 0;
|
|
builtin_opt.flags |= GF_PLUSOPT;
|
|
/* at&t ksh seems to have 0-9 as options, which are multiplied
|
|
* to get a number that is used with -L, -R, -Z or -i (eg, -1R2
|
|
* sets right justify in a field of 12). This allows options
|
|
* to be grouped in an order (eg, -Lu12), but disallows -i8 -L3 and
|
|
* does not allow the number to be specified as a seperate argument
|
|
* Here, the number must follow the RLZi option, but is optional
|
|
* (see the # kludge in ksh_getopt()).
|
|
*/
|
|
while ((optc = ksh_getopt(wp, &builtin_opt, options)) != EOF) {
|
|
flag = 0;
|
|
switch (optc) {
|
|
case 'L':
|
|
flag |= LJUST;
|
|
fieldstr = builtin_opt.optarg;
|
|
break;
|
|
case 'R':
|
|
flag |= RJUST;
|
|
fieldstr = builtin_opt.optarg;
|
|
break;
|
|
case 'U':
|
|
/* at&t ksh uses u, but this conflicts with
|
|
* upper/lower case. If this option is changed,
|
|
* need to change the -U below as well
|
|
*/
|
|
flag |= INT_U;
|
|
break;
|
|
case 'Z':
|
|
flag |= ZEROFIL;
|
|
fieldstr = builtin_opt.optarg;
|
|
break;
|
|
case 'f':
|
|
func = 1;
|
|
break;
|
|
case 'i':
|
|
flag |= INTEGER;
|
|
basestr = builtin_opt.optarg;
|
|
break;
|
|
case 'l':
|
|
flag |= LCASEV;
|
|
break;
|
|
case 'p': /* posix export/readonly -p flag */
|
|
pflag = 1;
|
|
break;
|
|
case 'r':
|
|
flag |= RDONLY;
|
|
break;
|
|
case 't':
|
|
flag |= TRACE;
|
|
break;
|
|
case 'u':
|
|
flag |= UCASEV_AL; /* upper case / autoload */
|
|
break;
|
|
case 'x':
|
|
flag |= EXPORT;
|
|
break;
|
|
case '?':
|
|
return 1;
|
|
}
|
|
if (builtin_opt.info & GI_PLUS) {
|
|
fclr |= flag;
|
|
fset &= ~flag;
|
|
thing = '+';
|
|
} else {
|
|
fset |= flag;
|
|
fclr &= ~flag;
|
|
thing = '-';
|
|
}
|
|
}
|
|
|
|
field = 0;
|
|
if (fieldstr && !bi_getn(fieldstr, &field))
|
|
return 1;
|
|
base = 0;
|
|
if (basestr && !bi_getn(basestr, &base))
|
|
return 1;
|
|
|
|
if (!(builtin_opt.info & GI_MINUSMINUS) && wp[builtin_opt.optind]
|
|
&& (wp[builtin_opt.optind][0] == '-'
|
|
|| wp[builtin_opt.optind][0] == '+')
|
|
&& wp[builtin_opt.optind][1] == '\0')
|
|
{
|
|
thing = wp[builtin_opt.optind][0];
|
|
builtin_opt.optind++;
|
|
}
|
|
|
|
if (func && ((fset|fclr) & ~(TRACE|UCASEV_AL|EXPORT))) {
|
|
bi_errorf("only -t, -u and -x options may be used with -f");
|
|
return 1;
|
|
}
|
|
if (wp[builtin_opt.optind]) {
|
|
/* Take care of exclusions */
|
|
/* setting these attributes clears the others, unless they
|
|
* are also set in this command
|
|
*/
|
|
if (fset & (LJUST|RJUST|ZEROFIL|UCASEV_AL|LCASEV|INTEGER
|
|
|INT_U|INT_L))
|
|
fclr |= ~fset &
|
|
(LJUST|RJUST|ZEROFIL|UCASEV_AL|LCASEV|INTEGER
|
|
|INT_U|INT_L);
|
|
fclr &= ~fset; /* set wins */
|
|
if ((fset & (ZEROFIL|LJUST)) == ZEROFIL) {
|
|
fset |= RJUST;
|
|
fclr &= ~RJUST;
|
|
}
|
|
if (fset & LCASEV) /* LCASEV has priority */
|
|
fclr |= UCASEV_AL;
|
|
else if (fset & UCASEV_AL)
|
|
fclr |= LCASEV;
|
|
if (fset & LJUST) /* LJUST has priority */
|
|
fclr |= RJUST;
|
|
else if (fset & RJUST)
|
|
fclr |= LJUST;
|
|
if ((fset | fclr) & INTEGER) {
|
|
if (!(fset | fclr) & INT_U)
|
|
fclr |= INT_U;
|
|
if (!(fset | fclr) & INT_L)
|
|
fclr |= INT_L;
|
|
}
|
|
fset &= ~fclr; /* in case of something like -LR */
|
|
}
|
|
|
|
/* set variables and attributes */
|
|
if (wp[builtin_opt.optind]) {
|
|
int i;
|
|
int rval = 0;
|
|
struct tbl *f;
|
|
|
|
if (local && !func)
|
|
fset |= LOCAL;
|
|
for (i = builtin_opt.optind; wp[i]; i++) {
|
|
if (func) {
|
|
f = findfunc(wp[i], hash(wp[i]),
|
|
(fset&UCASEV_AL) ? TRUE : FALSE);
|
|
if (!f) {
|
|
/* at&t ksh does ++rval: bogus */
|
|
rval = 1;
|
|
continue;
|
|
}
|
|
if (fset | fclr) {
|
|
f->flag |= fset;
|
|
f->flag &= ~fclr;
|
|
} else
|
|
fptreef(shl_stdout, 0,
|
|
"function %s %T\n",
|
|
wp[i], f->val.t);
|
|
} else if (!typeset(wp[i], fset, fclr, field, base)) {
|
|
bi_errorf("%s: not identifier", wp[i]);
|
|
return 1;
|
|
}
|
|
}
|
|
return rval;
|
|
}
|
|
|
|
/* list variables and attributes */
|
|
flag = fset | fclr; /* no difference at this point.. */
|
|
if (func) {
|
|
for (l = e->loc; l; l = l->next) {
|
|
for (p = tsort(&l->funs); (vp = *p++); ) {
|
|
if (flag && (vp->flag & flag) == 0)
|
|
continue;
|
|
if (thing == '-')
|
|
fptreef(shl_stdout, 0, "function %s %T\n",
|
|
vp->name, vp->val.t);
|
|
else
|
|
shprintf("%s\n", vp->name);
|
|
}
|
|
}
|
|
} else {
|
|
for (l = e->loc; l; l = l->next) {
|
|
for (p = tsort(&l->vars); (vp = *p++); )
|
|
for (; vp; vp = vp->u.array) {
|
|
/* Report an unset param only if the user has
|
|
* explicitly given it some attribute (like export);
|
|
* otherwise, after "echo $FOO", we would report FOO...
|
|
*/
|
|
if (!(vp->flag & ISSET) && !(vp->flag & USERATTRIB))
|
|
continue;
|
|
if (flag && (vp->flag & flag) == 0)
|
|
continue;
|
|
/* no arguments */
|
|
if (thing == 0 && flag == 0) {
|
|
/* at&t ksh prints things like export, integer,
|
|
* leftadj, zerofill, etc., but POSIX says must
|
|
* be suitable for re-entry...
|
|
*/
|
|
shprintf("typeset ");
|
|
if ((vp->flag&INTEGER))
|
|
shprintf("-i ");
|
|
if ((vp->flag&EXPORT))
|
|
shprintf("-x ");
|
|
if ((vp->flag&RDONLY))
|
|
shprintf("-r ");
|
|
if ((vp->flag&TRACE))
|
|
shprintf("-t ");
|
|
if ((vp->flag&LJUST))
|
|
shprintf("-L%d ", vp->u2.field);
|
|
if ((vp->flag&RJUST))
|
|
shprintf("-R%d ", vp->u2.field);
|
|
if ((vp->flag&ZEROFIL))
|
|
shprintf("-Z ");
|
|
if ((vp->flag&LCASEV))
|
|
shprintf("-l ");
|
|
if ((vp->flag&UCASEV_AL))
|
|
shprintf("-u ");
|
|
if ((vp->flag&INT_U))
|
|
shprintf("-U ");
|
|
if (vp->flag&ARRAY)
|
|
shprintf("%s[%d]\n", vp->name,vp->index);
|
|
else
|
|
shprintf("%s\n", vp->name);
|
|
} else {
|
|
if (pflag)
|
|
shprintf("%s ",
|
|
(flag & EXPORT) ? "export" : "readonly");
|
|
if (vp->flag&ARRAY)
|
|
shprintf("%s[%d]", vp->name, vp->index);
|
|
else
|
|
shprintf("%s", vp->name);
|
|
if (thing == '-' && (vp->flag&ISSET)) {
|
|
char *s = str_val(vp);
|
|
|
|
shprintf("=");
|
|
/* at&t ksh can't have justified integers.. */
|
|
if ((vp->flag & (INTEGER|LJUST|RJUST))
|
|
== INTEGER)
|
|
shprintf("%s", s);
|
|
else
|
|
print_value_quoted(s);
|
|
}
|
|
shprintf(newline);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
c_alias(wp)
|
|
char **wp;
|
|
{
|
|
struct table *t = &aliases;
|
|
int rv = 0, rflag = 0, tflag, Uflag = 0;
|
|
Tflag xflag = 0;
|
|
int optc;
|
|
|
|
while ((optc = ksh_getopt(wp, &builtin_opt, "drtUx")) != EOF)
|
|
switch (optc) {
|
|
case 'd':
|
|
t = &homedirs;
|
|
break;
|
|
case 'r':
|
|
rflag = 1;
|
|
break;
|
|
case 't':
|
|
t = &taliases;
|
|
break;
|
|
case 'U': /* kludge for tracked alias initialization
|
|
* (don't do a path search, just make an entry)
|
|
*/
|
|
Uflag = 1;
|
|
break;
|
|
case 'x':
|
|
xflag = EXPORT;
|
|
break;
|
|
case '?':
|
|
return 1;
|
|
}
|
|
wp += builtin_opt.optind;
|
|
|
|
tflag = t == &taliases;
|
|
|
|
/* "hash -r" means reset all the tracked aliases.. */
|
|
if (rflag) {
|
|
static const char *const args[] = {
|
|
"unalias", "-ta", (const char *) 0
|
|
};
|
|
|
|
if (!tflag || *wp) {
|
|
shprintf(
|
|
"alias: -r flag can only be used with -t and without arguments\n");
|
|
return 1;
|
|
}
|
|
ksh_getopt_reset(&builtin_opt, GF_ERROR);
|
|
return c_unalias((char **) args);
|
|
}
|
|
|
|
if (*wp == NULL) {
|
|
struct tbl *ap, **p;
|
|
|
|
for (p = tsort(t); (ap = *p++) != NULL; )
|
|
if ((ap->flag & (ISSET|xflag)) == (ISSET|xflag)) {
|
|
shprintf("%s=", ap->name);
|
|
print_value_quoted(ap->val.s);
|
|
shprintf(newline);
|
|
}
|
|
}
|
|
|
|
for (; *wp != NULL; wp++) {
|
|
char *alias = *wp;
|
|
char *val = strchr(alias, '=');
|
|
char *newval;
|
|
struct tbl *ap;
|
|
int h;
|
|
|
|
if (val)
|
|
alias = str_nsave(alias, val++ - alias, ATEMP);
|
|
h = hash(alias);
|
|
if (val == NULL && !tflag && !xflag) {
|
|
ap = tsearch(t, alias, h);
|
|
if (ap != NULL && (ap->flag&ISSET)) {
|
|
shprintf("%s=", ap->name);
|
|
print_value_quoted(ap->val.s);
|
|
shprintf(newline);
|
|
} else {
|
|
shprintf("%s alias not found\n", alias);
|
|
rv = 1;
|
|
}
|
|
continue;
|
|
}
|
|
ap = tenter(t, alias, h);
|
|
ap->type = tflag ? CTALIAS : CALIAS;
|
|
/* Are we setting the value or just some flags? */
|
|
if ((val && !tflag) || (!val && tflag && !Uflag)) {
|
|
if (ap->flag&ALLOC) {
|
|
ap->flag &= ~(ALLOC|ISSET);
|
|
afree((void*)ap->val.s, APERM);
|
|
}
|
|
/* ignore values for -t (at&t ksh does this) */
|
|
newval = tflag ? search(alias, path, X_OK, (int *) 0)
|
|
: val;
|
|
if (newval) {
|
|
ap->val.s = str_save(newval, APERM);
|
|
ap->flag |= ALLOC|ISSET;
|
|
} else
|
|
ap->flag &= ~ISSET;
|
|
}
|
|
ap->flag |= DEFINED|xflag;
|
|
if (val)
|
|
afree(alias, ATEMP);
|
|
}
|
|
|
|
return rv;
|
|
}
|
|
|
|
int
|
|
c_unalias(wp)
|
|
char **wp;
|
|
{
|
|
register struct table *t = &aliases;
|
|
register struct tbl *ap;
|
|
int rv = 0, all = 0;
|
|
int optc;
|
|
|
|
while ((optc = ksh_getopt(wp, &builtin_opt, "adt")) != EOF)
|
|
switch (optc) {
|
|
case 'a':
|
|
all = 1;
|
|
break;
|
|
case 'd':
|
|
t = &homedirs;
|
|
break;
|
|
case 't':
|
|
t = &taliases;
|
|
break;
|
|
case '?':
|
|
return 1;
|
|
}
|
|
wp += builtin_opt.optind;
|
|
|
|
for (; *wp != NULL; wp++) {
|
|
ap = tsearch(t, *wp, hash(*wp));
|
|
if (ap == NULL) {
|
|
rv = 1; /* POSIX */
|
|
continue;
|
|
}
|
|
if (ap->flag&ALLOC) {
|
|
ap->flag &= ~(ALLOC|ISSET);
|
|
afree((void*)ap->val.s, APERM);
|
|
}
|
|
ap->flag &= ~(DEFINED|ISSET|EXPORT);
|
|
}
|
|
|
|
if (all) {
|
|
struct tstate ts;
|
|
|
|
for (twalk(&ts, t); (ap = tnext(&ts)); ) {
|
|
if (ap->flag&ALLOC) {
|
|
ap->flag &= ~(ALLOC|ISSET);
|
|
afree((void*)ap->val.s, APERM);
|
|
}
|
|
ap->flag &= ~(DEFINED|ISSET|EXPORT);
|
|
}
|
|
}
|
|
|
|
return rv;
|
|
}
|
|
|
|
#ifdef KSH
|
|
int
|
|
c_let(wp)
|
|
char **wp;
|
|
{
|
|
int rv = 1;
|
|
long val;
|
|
|
|
if (wp[1] == (char *) 0) /* at&t ksh does this */
|
|
bi_errorf("no arguments");
|
|
else
|
|
for (wp++; *wp; wp++)
|
|
if (!evaluate(*wp, &val, TRUE)) {
|
|
rv = 2; /* distinguish error from zero result */
|
|
break;
|
|
} else
|
|
rv = val == 0;
|
|
return rv;
|
|
}
|
|
#endif /* KSH */
|
|
|
|
int
|
|
c_jobs(wp)
|
|
char **wp;
|
|
{
|
|
int optc;
|
|
int flag = 0;
|
|
int nflag = 0;
|
|
int rv = 0;
|
|
|
|
while ((optc = ksh_getopt(wp, &builtin_opt, "lpnz")) != EOF)
|
|
switch (optc) {
|
|
case 'l':
|
|
flag = 1;
|
|
break;
|
|
case 'p':
|
|
flag = 2;
|
|
break;
|
|
case 'n':
|
|
nflag = 1;
|
|
break;
|
|
case 'z': /* debugging: print zombies */
|
|
nflag = -1;
|
|
break;
|
|
case '?':
|
|
return 1;
|
|
}
|
|
wp += builtin_opt.optind;
|
|
if (!*wp) {
|
|
if (j_jobs((char *) 0, flag, nflag))
|
|
rv = 1;
|
|
} else {
|
|
for (; *wp; wp++) {
|
|
if (j_jobs(*wp, flag, nflag))
|
|
rv = 1;
|
|
}
|
|
}
|
|
return rv;
|
|
}
|
|
|
|
#ifdef JOBS
|
|
int
|
|
c_fgbg(wp)
|
|
char **wp;
|
|
{
|
|
int bg = strcmp(*wp, "bg") == 0;
|
|
int UNINITIALIZED(rv);
|
|
|
|
if (!Flag(FMONITOR)) {
|
|
bi_errorf("job control not enabled");
|
|
return 1;
|
|
}
|
|
if (ksh_getopt(wp, &builtin_opt, null) == '?')
|
|
return 1;
|
|
wp += builtin_opt.optind;
|
|
if (*wp)
|
|
for (; *wp; wp++)
|
|
rv = j_resume(*wp, bg);
|
|
else
|
|
rv = j_resume("%%", bg);
|
|
/* POSIX says fg shall return 0 (unless an error occurs).
|
|
* at&t ksh returns the exit value of the job...
|
|
*/
|
|
return (bg || Flag(FPOSIX)) ? 0 : rv;
|
|
}
|
|
#endif
|
|
|
|
struct kill_info {
|
|
int num_width;
|
|
int name_width;
|
|
};
|
|
static char *kill_fmt_entry ARGS((void *arg, int i, char *buf, int buflen));
|
|
|
|
/* format a single kill item */
|
|
static char *
|
|
kill_fmt_entry(arg, i, buf, buflen)
|
|
void *arg;
|
|
int i;
|
|
char *buf;
|
|
int buflen;
|
|
{
|
|
struct kill_info *ki = (struct kill_info *) arg;
|
|
|
|
i++;
|
|
if (sigtraps[i].name)
|
|
shf_snprintf(buf, buflen, "%*d %*s %s",
|
|
ki->num_width, i,
|
|
ki->name_width, sigtraps[i].name,
|
|
sigtraps[i].mess);
|
|
else
|
|
shf_snprintf(buf, buflen, "%*d %*d %s",
|
|
ki->num_width, i,
|
|
ki->name_width, sigtraps[i].signal,
|
|
sigtraps[i].mess);
|
|
return buf;
|
|
}
|
|
|
|
|
|
int
|
|
c_kill(wp)
|
|
char **wp;
|
|
{
|
|
Trap *t = (Trap *) 0;
|
|
char *p;
|
|
int lflag = 0;
|
|
int i, n, rv, sig;
|
|
|
|
/* assume old style options if -digits or -UPPERCASE */
|
|
if ((p = wp[1]) && *p == '-' && (digit(p[1]) ||
|
|
isupper((unsigned char)p[1]))) {
|
|
if (!(t = gettrap(p + 1))) {
|
|
bi_errorf("bad signal `%s'", p + 1);
|
|
return 1;
|
|
}
|
|
i = (wp[2] && strcmp(wp[2], "--") == 0) ? 3 : 2;
|
|
} else {
|
|
int optc;
|
|
|
|
while ((optc = ksh_getopt(wp, &builtin_opt, "ls:")) != EOF)
|
|
switch (optc) {
|
|
case 'l':
|
|
lflag = 1;
|
|
break;
|
|
case 's':
|
|
if (!(t = gettrap(builtin_opt.optarg))) {
|
|
bi_errorf("bad signal `%s'",
|
|
builtin_opt.optarg);
|
|
return 1;
|
|
}
|
|
case '?':
|
|
return 1;
|
|
}
|
|
i = builtin_opt.optind;
|
|
}
|
|
if ((lflag && t) || (!wp[i] && !lflag)) {
|
|
shf_fprintf(shl_out,
|
|
"Usage: kill [ -s signame | -signum | -signame ] {pid|job}...\n\
|
|
kill -l [exit_status]\n"
|
|
);
|
|
bi_errorf(null);
|
|
return 1;
|
|
}
|
|
|
|
if (lflag) {
|
|
if (wp[i]) {
|
|
for (; wp[i]; i++) {
|
|
if (!bi_getn(wp[i], &n))
|
|
return 1;
|
|
if (n > 128 && n < 128 + SIGNALS)
|
|
n -= 128;
|
|
if (n > 0 && n < SIGNALS && sigtraps[n].name)
|
|
shprintf("%s\n", sigtraps[n].name);
|
|
else
|
|
shprintf("%d\n", n);
|
|
}
|
|
} else if (Flag(FPOSIX)) {
|
|
p = null;
|
|
for (i = 1; i < SIGNALS; i++, p = space)
|
|
if (sigtraps[i].name)
|
|
shprintf("%s%s", p, sigtraps[i].name);
|
|
shprintf(newline);
|
|
} else {
|
|
int w, i;
|
|
int mess_width;
|
|
struct kill_info ki;
|
|
|
|
for (i = SIGNALS, ki.num_width = 1; i >= 10; i /= 10)
|
|
ki.num_width++;
|
|
ki.name_width = mess_width = 0;
|
|
for (i = 0; i < SIGNALS; i++) {
|
|
w = sigtraps[i].name ? strlen(sigtraps[i].name)
|
|
: ki.num_width;
|
|
if (w > ki.name_width)
|
|
ki.name_width = w;
|
|
w = strlen(sigtraps[i].mess);
|
|
if (w > mess_width)
|
|
mess_width = w;
|
|
}
|
|
|
|
print_columns(shl_stdout, SIGNALS - 1,
|
|
kill_fmt_entry, (void *) &ki,
|
|
ki.num_width + ki.name_width + mess_width + 3);
|
|
}
|
|
return 0;
|
|
}
|
|
rv = 0;
|
|
sig = t ? t->signal : SIGTERM;
|
|
for (; (p = wp[i]); i++) {
|
|
if (*p == '%') {
|
|
if (j_kill(p, sig))
|
|
rv = 1;
|
|
} else if (!getn(p, &n)) {
|
|
bi_errorf("%s: arguments must be jobs or process ids",
|
|
p);
|
|
rv = 1;
|
|
} else {
|
|
/* use killpg if < -1 since -1 does special things for
|
|
* some non-killpg-endowed kills
|
|
*/
|
|
if ((n < -1 ? killpg(-n, sig) : kill(n, sig)) < 0) {
|
|
bi_errorf("%s: %s", p, strerror(errno));
|
|
rv = 1;
|
|
}
|
|
}
|
|
}
|
|
return rv;
|
|
}
|
|
|
|
static Getopt user_opt; /* parsing state for getopts builtin command */
|
|
static int getopts_noset; /* stop OPTIND assign from resetting state */
|
|
|
|
void
|
|
getopts_reset(val)
|
|
int val;
|
|
{
|
|
if (!getopts_noset && val >= 1) {
|
|
ksh_getopt_reset(&user_opt,
|
|
GF_NONAME | (Flag(FPOSIX) ? 0 : GF_PLUSOPT));
|
|
user_opt.optind = val;
|
|
}
|
|
}
|
|
|
|
int
|
|
c_getopts(wp)
|
|
char **wp;
|
|
{
|
|
int argc;
|
|
const char *options;
|
|
const char *var;
|
|
int optc;
|
|
char buf[3];
|
|
struct tbl *vq;
|
|
|
|
if (ksh_getopt(wp, &builtin_opt, null) == '?')
|
|
return 1;
|
|
wp += builtin_opt.optind;
|
|
|
|
options = *wp++;
|
|
if (!options) {
|
|
bi_errorf("missing options argument");
|
|
return 1;
|
|
}
|
|
|
|
var = *wp++;
|
|
if (!var) {
|
|
bi_errorf("missing name argument");
|
|
return 1;
|
|
}
|
|
if (!*var || *skip_varname(var, TRUE)) {
|
|
bi_errorf("%s: is not an identifier", var);
|
|
return 1;
|
|
}
|
|
|
|
if (e->loc->next == (struct block *) 0) {
|
|
internal_errorf(0, "c_getopts: no argv");
|
|
return 1;
|
|
}
|
|
/* Which arguments are we parsing... */
|
|
if (*wp == (char *) 0)
|
|
wp = e->loc->next->argv;
|
|
else
|
|
*--wp = e->loc->next->argv[0];
|
|
|
|
/* Check that our saved state won't cause a core dump... */
|
|
for (argc = 0; wp[argc]; argc++)
|
|
;
|
|
if (user_opt.optind > argc
|
|
|| (user_opt.p != 0
|
|
&& user_opt.p > strlen(wp[user_opt.optind - 1])))
|
|
{
|
|
bi_errorf("arguments changed since last call");
|
|
return 1;
|
|
}
|
|
|
|
user_opt.optarg = (char *) 0;
|
|
optc = ksh_getopt(wp, &user_opt, options);
|
|
|
|
if (optc >= 0 && optc != '?' && (user_opt.info & GI_PLUS)) {
|
|
buf[0] = '+';
|
|
buf[1] = optc;
|
|
buf[2] = '\0';
|
|
} else {
|
|
/* POSIX says var is set to ? at end-of-options, at&t ksh
|
|
* sets it to null - we go with POSIX...
|
|
*/
|
|
buf[0] = optc < 0 ? '?' : optc;
|
|
buf[1] = '\0';
|
|
}
|
|
|
|
/* at&t ksh does not change OPTIND if it was an unknown option.
|
|
* Scripts counting on this are prone to break... (ie, don't count
|
|
* on this staying).
|
|
*/
|
|
if (optc != '?') {
|
|
getopts_noset = 1;
|
|
setint(global("OPTIND"), (long) user_opt.optind);
|
|
getopts_noset = 0;
|
|
}
|
|
|
|
if (user_opt.optarg == (char *) 0)
|
|
unset(global("OPTARG"), 0);
|
|
else
|
|
setstr(global("OPTARG"), user_opt.optarg);
|
|
|
|
vq = global(var);
|
|
if (vq->flag & RDONLY) {
|
|
bi_errorf("%s is readonly", var);
|
|
return 1;
|
|
}
|
|
if (Flag(FEXPORT))
|
|
typeset(var, EXPORT, 0, 0, 0);
|
|
setstr(vq, buf);
|
|
|
|
return optc < 0 ? 1 : 0;
|
|
}
|
|
|
|
#ifdef EMACS
|
|
int
|
|
c_bind(wp)
|
|
char **wp;
|
|
{
|
|
int rv = 0, macro = 0, list = 0;
|
|
register char *cp;
|
|
int optc;
|
|
|
|
while ((optc = ksh_getopt(wp, &builtin_opt, "lm")) != EOF)
|
|
switch (optc) {
|
|
case 'l':
|
|
list = 1;
|
|
break;
|
|
case 'm':
|
|
macro = 1;
|
|
break;
|
|
case '?':
|
|
return 1;
|
|
}
|
|
wp += builtin_opt.optind;
|
|
|
|
if (*wp == NULL) /* list all */
|
|
rv = x_bind((char*)NULL, (char*)NULL, 0, list);
|
|
|
|
for (; *wp != NULL; wp++) {
|
|
cp = strchr(*wp, '=');
|
|
if (cp != NULL)
|
|
*cp++ = '\0';
|
|
if (x_bind(*wp, cp, macro, 0))
|
|
rv = 1;
|
|
}
|
|
|
|
return rv;
|
|
}
|
|
#endif
|
|
|
|
/* A leading = means assignments before command are kept;
|
|
* a leading * means a POSIX special builtin;
|
|
* a leading + means a POSIX regular builtin
|
|
* (* and + should not be combined).
|
|
*/
|
|
const struct builtin kshbuiltins [] = {
|
|
{"+alias", c_alias}, /* no =: at&t manual wrong */
|
|
{"+cd", c_cd},
|
|
{"+command", c_command},
|
|
{"echo", c_print},
|
|
{"*=export", c_typeset},
|
|
#ifdef HISTORY
|
|
{"+fc", c_fc},
|
|
#endif /* HISTORY */
|
|
{"+getopts", c_getopts},
|
|
{"+jobs", c_jobs},
|
|
{"+kill", c_kill},
|
|
#ifdef KSH
|
|
{"let", c_let},
|
|
#endif /* KSH */
|
|
{"print", c_print},
|
|
{"pwd", c_pwd},
|
|
{"*=readonly", c_typeset},
|
|
{"=typeset", c_typeset},
|
|
{"+unalias", c_unalias},
|
|
{"whence", c_whence},
|
|
#ifdef JOBS
|
|
{"+bg", c_fgbg},
|
|
{"+fg", c_fgbg},
|
|
#endif
|
|
#ifdef EMACS
|
|
{"bind", c_bind},
|
|
#endif
|
|
{NULL, NULL}
|
|
};
|