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NetBSD/usr.bin/xinstall/xinstall.c

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/* $NetBSD: xinstall.c,v 1.92 2005/09/25 14:35:54 elad Exp $ */
/*
* Copyright (c) 1987, 1993
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#if HAVE_NBTOOL_CONFIG_H
#include "nbtool_config.h"
#else
#define HAVE_FUTIMES 1
#define HAVE_STRUCT_STAT_ST_FLAGS 1
#endif
#include <sys/cdefs.h>
#if defined(__COPYRIGHT) && !defined(lint)
__COPYRIGHT("@(#) Copyright (c) 1987, 1993\n\
The Regents of the University of California. All rights reserved.\n");
#endif /* not lint */
#if defined(__RCSID) && !defined(lint)
#if 0
static char sccsid[] = "@(#)xinstall.c 8.1 (Berkeley) 7/21/93";
#else
__RCSID("$NetBSD: xinstall.c,v 1.92 2005/09/25 14:35:54 elad Exp $");
#endif
#endif /* not lint */
#define __MKTEMP_OK__ /* All uses of mktemp have been checked */
#include <sys/param.h>
#include <sys/mman.h>
#include <sys/stat.h>
#include <sys/wait.h>
#include <ctype.h>
#include <err.h>
#include <errno.h>
#include <fcntl.h>
#include <grp.h>
#include <libgen.h>
#include <paths.h>
#include <pwd.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <vis.h>
#include <md5.h>
#include <crypto/rmd160.h>
#include <sha1.h>
#include "pathnames.h"
#include "stat_flags.h"
#include "mtree.h"
#define STRIP_ARGS_MAX 32
#define BACKUP_SUFFIX ".old"
int dobackup, dodir, dostrip, dolink, dopreserve, dorename, dounpriv;
int numberedbackup;
int mode = S_IRWXU|S_IRGRP|S_IXGRP|S_IROTH|S_IXOTH;
char pathbuf[MAXPATHLEN];
id_t uid = -1, gid = -1;
char *group, *owner, *fflags, *tags;
FILE *metafp;
char *metafile;
u_long fileflags;
char *stripArgs;
char *afterinstallcmd;
char *suffix = BACKUP_SUFFIX;
char *destdir;
enum {
DIGEST_NONE = 0,
DIGEST_MD5,
DIGEST_RMD160,
DIGEST_SHA1,
} digesttype = DIGEST_NONE;
char *digest;
#define LN_ABSOLUTE 0x01
#define LN_RELATIVE 0x02
#define LN_HARD 0x04
#define LN_SYMBOLIC 0x08
#define LN_MIXED 0x10
#define DIRECTORY 0x01 /* Tell install it's a directory. */
#define SETFLAGS 0x02 /* Tell install to set flags. */
#define HASUID 0x04 /* Tell install the uid was given */
#define HASGID 0x08 /* Tell install the gid was given */
void afterinstall(const char *, const char *, int);
void backup(const char *);
char *copy(int, char *, int, char *, off_t);
int do_link(char *, char *);
void do_symlink(char *, char *);
void install(char *, char *, u_int);
void install_dir(char *, u_int);
int main(int, char *[]);
void makelink(char *, char *);
void metadata_log(const char *, const char *, struct timeval *,
const char *, const char *);
int parseid(char *, id_t *);
void strip(char *);
void usage(void);
char *xbasename(char *);
char *xdirname(char *);
int
main(int argc, char *argv[])
{
struct stat from_sb, to_sb;
void *set;
u_int iflags;
int ch, no_target;
char *p, *to_name;
setprogname(argv[0]);
iflags = 0;
while ((ch = getopt(argc, argv, "a:cbB:dD:f:g:h:l:m:M:N:o:prsS:T:U"))
!= -1)
switch((char)ch) {
case 'a':
afterinstallcmd = strdup(optarg);
if (afterinstallcmd == NULL)
errx(1, "%s", strerror(ENOMEM));
break;
case 'B':
suffix = optarg;
numberedbackup = 0;
{
/* Check if given suffix really generates
different suffixes - catch e.g. ".%" */
char suffix_expanded0[FILENAME_MAX],
suffix_expanded1[FILENAME_MAX];
(void)snprintf(suffix_expanded0, FILENAME_MAX,
suffix, 0);
(void)snprintf(suffix_expanded1, FILENAME_MAX,
suffix, 1);
if (strcmp(suffix_expanded0, suffix_expanded1)
!= 0)
numberedbackup = 1;
}
/* fall through; -B implies -b */
/*FALLTHROUGH*/
case 'b':
dobackup = 1;
break;
case 'c':
/* ignored; was "docopy" which is now the default. */
break;
case 'd':
dodir = 1;
break;
case 'D':
destdir = optarg;
break;
#if ! HAVE_NBTOOL_CONFIG_H
case 'f':
fflags = optarg;
break;
#endif
case 'g':
group = optarg;
break;
case 'h':
digest = optarg;
break;
case 'l':
for (p = optarg; *p; p++)
switch (*p) {
case 's':
dolink &= ~(LN_HARD|LN_MIXED);
dolink |= LN_SYMBOLIC;
break;
case 'h':
dolink &= ~(LN_SYMBOLIC|LN_MIXED);
dolink |= LN_HARD;
break;
case 'm':
dolink &= ~(LN_SYMBOLIC|LN_HARD);
dolink |= LN_MIXED;
break;
case 'a':
dolink &= ~LN_RELATIVE;
dolink |= LN_ABSOLUTE;
break;
case 'r':
dolink &= ~LN_ABSOLUTE;
dolink |= LN_RELATIVE;
break;
default:
errx(1, "%c: invalid link type", *p);
/* NOTREACHED */
}
break;
case 'm':
if (!(set = setmode(optarg)))
errx(1, "%s: invalid file mode", optarg);
mode = getmode(set, 0);
free(set);
break;
case 'M':
metafile = optarg;
break;
case 'N':
if (! setup_getid(optarg))
errx(1,
"Unable to use user and group databases in `%s'",
optarg);
break;
case 'o':
owner = optarg;
break;
case 'p':
dopreserve = 1;
break;
case 'r':
dorename = 1;
break;
case 'S':
stripArgs = strdup(optarg);
if (stripArgs == NULL)
errx(1, "%s", strerror(ENOMEM));
/* fall through; -S implies -s */
/*FALLTHROUGH*/
case 's':
dostrip = 1;
break;
case 'T':
tags = optarg;
break;
case 'U':
dounpriv = 1;
break;
case '?':
default:
usage();
}
argc -= optind;
argv += optind;
/* strip and link options make no sense when creating directories */
if ((dostrip || dolink) && dodir)
usage();
/* strip and flags make no sense with links */
if ((dostrip || fflags) && dolink)
usage();
/* must have at least two arguments, except when creating directories */
if (argc < 2 && !dodir)
usage();
if (digest) {
if (0) {
} else if (strcmp(digest, "none") == 0) {
digesttype = DIGEST_NONE;
} else if (strcmp(digest, "md5") == 0) {
digesttype = DIGEST_MD5;
} else if (strcmp(digest, "rmd160") == 0) {
digesttype = DIGEST_RMD160;
} else if (strcmp(digest, "sha1") == 0) {
digesttype = DIGEST_SHA1;
} else {
warnx("unknown digest `%s'", digest);
usage();
}
}
/* get group and owner id's */
if (group && !dounpriv) {
if (gid_from_group(group, &gid) == -1 && ! parseid(group, &gid))
errx(1, "unknown group %s", group);
iflags |= HASGID;
}
if (owner && !dounpriv) {
if (uid_from_user(owner, &uid) == -1 && ! parseid(owner, &uid))
errx(1, "unknown user %s", owner);
iflags |= HASUID;
}
#if ! HAVE_NBTOOL_CONFIG_H
if (fflags && !dounpriv) {
if (string_to_flags(&fflags, &fileflags, NULL))
errx(1, "%s: invalid flag", fflags);
iflags |= SETFLAGS;
}
#endif
if (metafile) {
if ((metafp = fopen(metafile, "a")) == NULL)
warn("open %s", metafile);
} else
digesttype = DIGEST_NONE;
if (dodir) {
for (; *argv != NULL; ++argv)
install_dir(*argv, iflags);
exit (0);
}
no_target = stat(to_name = argv[argc - 1], &to_sb);
if (!no_target && S_ISDIR(to_sb.st_mode)) {
for (; *argv != to_name; ++argv)
install(*argv, to_name, iflags | DIRECTORY);
exit(0);
}
/* can't do file1 file2 directory/file */
if (argc != 2)
usage();
if (!no_target) {
/* makelink() handles checks for links */
if (!dolink) {
if (stat(*argv, &from_sb))
err(1, "%s: stat", *argv);
if (!S_ISREG(to_sb.st_mode))
errx(1, "%s: not a regular file", to_name);
if (to_sb.st_dev == from_sb.st_dev &&
to_sb.st_ino == from_sb.st_ino)
errx(1, "%s and %s are the same file", *argv,
to_name);
}
/*
* Unlink now... avoid ETXTBSY errors later. Try and turn
* off the append/immutable bits -- if we fail, go ahead,
* it might work.
*/
#if ! HAVE_NBTOOL_CONFIG_H
#define NOCHANGEBITS (UF_IMMUTABLE | UF_APPEND | SF_IMMUTABLE | SF_APPEND)
if (to_sb.st_flags & NOCHANGEBITS)
(void)chflags(to_name,
to_sb.st_flags & ~(NOCHANGEBITS));
#endif
if (dobackup)
backup(to_name);
else if (!dorename)
(void)unlink(to_name);
}
install(*argv, to_name, iflags);
exit(0);
}
/*
* parseid --
* parse uid or gid from arg into id, returning non-zero if successful
*/
int
parseid(char *name, id_t *id)
{
char *ep;
errno = 0;
*id = (id_t)strtoul(name, &ep, 10);
if (errno || *ep != '\0')
return (0);
return (1);
}
/*
* do_link --
* make a hard link, obeying dorename if set
* return -1 on failure
*/
int
do_link(char *from_name, char *to_name)
{
char tmpl[MAXPATHLEN];
int ret;
if (dorename) {
(void)snprintf(tmpl, sizeof(tmpl), "%s/inst.XXXXXX",
xdirname(to_name));
/* This usage is safe. */
if (mktemp(tmpl) == NULL)
err(1, "%s: mktemp", tmpl);
ret = link(from_name, tmpl);
if (ret == 0) {
ret = rename(tmpl, to_name);
if (ret < 0)
/* remove temporary link before exiting */
(void)unlink(tmpl);
}
return (ret);
} else
return (link(from_name, to_name));
}
/*
* do_symlink --
* make a symbolic link, obeying dorename if set
* exit on failure
*/
void
do_symlink(char *from_name, char *to_name)
{
char tmpl[MAXPATHLEN];
if (dorename) {
(void)snprintf(tmpl, sizeof(tmpl), "%s/inst.XXXXXX",
xdirname(to_name));
/* This usage is safe. */
if (mktemp(tmpl) == NULL)
err(1, "%s: mktemp", tmpl);
if (symlink(from_name, tmpl) == -1)
err(1, "symlink %s -> %s", from_name, tmpl);
if (rename(tmpl, to_name) == -1) {
/* remove temporary link before exiting */
(void)unlink(tmpl);
err(1, "%s: rename", to_name);
}
} else {
if (symlink(from_name, to_name) == -1)
err(1, "symlink %s -> %s", from_name, to_name);
}
}
/*
* makelink --
* make a link from source to destination
*/
void
makelink(char *from_name, char *to_name)
{
char src[MAXPATHLEN], dst[MAXPATHLEN], lnk[MAXPATHLEN];
struct stat to_sb;
/* Try hard links first */
if (dolink & (LN_HARD|LN_MIXED)) {
if (do_link(from_name, to_name) == -1) {
if ((dolink & LN_HARD) || errno != EXDEV)
err(1, "link %s -> %s", from_name, to_name);
} else {
if (stat(to_name, &to_sb))
err(1, "%s: stat", to_name);
if (S_ISREG(to_sb.st_mode)) {
/* XXX: only metalog hardlinked files */
int omode;
char *oowner, *ogroup, *offlags;
char *dres;
/* XXX: use underlying perms */
omode = mode;
mode = (to_sb.st_mode & 0777);
oowner = owner;
owner = NULL;
ogroup = group;
group = NULL;
offlags = fflags;
fflags = NULL;
switch (digesttype) {
case DIGEST_MD5:
dres = MD5File(from_name, NULL);
break;
case DIGEST_RMD160:
dres = RMD160File(from_name, NULL);
break;
case DIGEST_SHA1:
dres = SHA1File(from_name, NULL);
break;
default:
dres = NULL;
}
metadata_log(to_name, "file", NULL, NULL, dres);
free(dres);
mode = omode;
owner = oowner;
group = ogroup;
fflags = offlags;
}
return;
}
}
/* Symbolic links */
if (dolink & LN_ABSOLUTE) {
/* Convert source path to absolute */
if (realpath(from_name, src) == NULL)
err(1, "%s: realpath", from_name);
do_symlink(src, to_name);
/* XXX: src may point outside of destdir */
metadata_log(to_name, "link", NULL, src, NULL);
return;
}
if (dolink & LN_RELATIVE) {
char *cp, *d, *s;
/* Resolve pathnames */
if (realpath(from_name, src) == NULL)
err(1, "%s: realpath", from_name);
/*
* The last component of to_name may be a symlink,
* so use realpath to resolve only the directory.
*/
cp = xdirname(to_name);
if (realpath(cp, dst) == NULL)
err(1, "%s: realpath", cp);
/* .. and add the last component */
if (strcmp(dst, "/") != 0) {
if (strlcat(dst, "/", sizeof(dst)) > sizeof(dst))
errx(1, "resolved pathname too long");
}
cp = xbasename(to_name);
if (strlcat(dst, cp, sizeof(dst)) > sizeof(dst))
errx(1, "resolved pathname too long");
/* trim common path components */
for (s = src, d = dst; *s == *d; s++, d++)
continue;
while (*s != '/')
s--, d--;
/* count the number of directories we need to backtrack */
for (++d, lnk[0] = '\0'; *d; d++)
if (*d == '/')
(void)strlcat(lnk, "../", sizeof(lnk));
(void)strlcat(lnk, ++s, sizeof(lnk));
do_symlink(lnk, to_name);
/* XXX: lnk may point outside of destdir */
metadata_log(to_name, "link", NULL, lnk, NULL);
return;
}
/*
* If absolute or relative was not specified,
* try the names the user provided
*/
do_symlink(from_name, to_name);
/* XXX: from_name may point outside of destdir */
metadata_log(to_name, "link", NULL, from_name, NULL);
}
/*
* install --
* build a path name and install the file
*/
void
install(char *from_name, char *to_name, u_int flags)
{
struct stat from_sb;
#if ! HAVE_NBTOOL_CONFIG_H
struct stat to_sb;
#endif
struct timeval tv[2];
int devnull, from_fd, to_fd, serrno, tmpmode;
char *p, tmpl[MAXPATHLEN], *oto_name, *digestresult;
if (!dolink) {
/* ensure that from_sb & tv are sane if !dolink */
if (stat(from_name, &from_sb))
err(1, "%s: stat", from_name);
#if BSD4_4 && !HAVE_NBTOOL_CONFIG_H
TIMESPEC_TO_TIMEVAL(&tv[0], &from_sb.st_atimespec);
TIMESPEC_TO_TIMEVAL(&tv[1], &from_sb.st_mtimespec);
#else
tv[0].tv_sec = from_sb.st_atime;
tv[0].tv_usec = 0;
tv[1].tv_sec = from_sb.st_mtime;
tv[1].tv_usec = 0;
#endif
}
if (flags & DIRECTORY || strcmp(from_name, _PATH_DEVNULL)) {
if (!dolink) {
if (!S_ISREG(from_sb.st_mode))
errx(1, "%s: not a regular file", from_name);
}
/* Build the target path. */
if (flags & DIRECTORY) {
(void)snprintf(pathbuf, sizeof(pathbuf), "%s/%s",
to_name,
(p = strrchr(from_name, '/')) ? ++p : from_name);
to_name = pathbuf;
}
devnull = 0;
} else {
#if HAVE_STRUCT_STAT_ST_FLAGS
from_sb.st_flags = 0; /* XXX */
#endif
devnull = 1;
}
/*
* Unlink now... avoid ETXTBSY errors later. Try and turn
* off the append/immutable bits -- if we fail, go ahead,
* it might work.
*/
#if ! HAVE_NBTOOL_CONFIG_H
if (stat(to_name, &to_sb) == 0 &&
to_sb.st_flags & (NOCHANGEBITS))
(void)chflags(to_name, to_sb.st_flags & ~(NOCHANGEBITS));
#endif
if (dorename) {
(void)snprintf(tmpl, sizeof(tmpl), "%s/inst.XXXXXX",
xdirname(to_name));
oto_name = to_name;
to_name = tmpl;
} else {
oto_name = NULL; /* pacify gcc */
if (dobackup)
backup(to_name);
else
(void)unlink(to_name);
}
if (dolink) {
makelink(from_name, dorename ? oto_name : to_name);
return;
}
/* Create target. */
if (dorename) {
if ((to_fd = mkstemp(to_name)) == -1)
err(1, "%s: mkstemp", to_name);
} else {
if ((to_fd = open(to_name,
O_CREAT | O_WRONLY | O_TRUNC, S_IRUSR | S_IWUSR)) < 0)
err(1, "%s: open", to_name);
}
digestresult = NULL;
if (!devnull) {
if ((from_fd = open(from_name, O_RDONLY, 0)) < 0) {
(void)unlink(to_name);
err(1, "%s: open", from_name);
}
digestresult =
copy(from_fd, from_name, to_fd, to_name, from_sb.st_size);
(void)close(from_fd);
}
if (dostrip) {
strip(to_name);
/*
* Re-open our fd on the target, in case we used a strip
* that does not work in-place -- like gnu binutils strip.
*/
close(to_fd);
if ((to_fd = open(to_name, O_RDONLY, S_IRUSR | S_IWUSR)) < 0)
err(1, "stripping %s", to_name);
}
if (afterinstallcmd != NULL) {
afterinstall(afterinstallcmd, to_name, 1);
/*
* Re-open our fd on the target, in case we used an
* after-install command that does not work in-place
*/
close(to_fd);
if ((to_fd = open(to_name, O_RDONLY, S_IRUSR | S_IWUSR)) < 0)
err(1, "running after install command on %s", to_name);
}
/*
* Set owner, group, mode for target; do the chown first,
* chown may lose the setuid bits.
*/
if (!dounpriv &&
(flags & (HASUID | HASGID)) && fchown(to_fd, uid, gid) == -1) {
serrno = errno;
(void)unlink(to_name);
errx(1, "%s: chown/chgrp: %s", to_name, strerror(serrno));
}
tmpmode = mode;
if (dounpriv)
tmpmode &= S_IRWXU|S_IRWXG|S_IRWXO;
if (fchmod(to_fd, tmpmode) == -1) {
serrno = errno;
(void)unlink(to_name);
errx(1, "%s: chmod: %s", to_name, strerror(serrno));
}
/*
* Preserve the date of the source file.
*/
if (dopreserve) {
#if HAVE_FUTIMES
if (futimes(to_fd, tv) == -1)
warn("%s: futimes", to_name);
#else
if (utimes(to_name, tv) == -1)
warn("%s: utimes", to_name);
#endif
}
(void)close(to_fd);
if (dorename) {
if (rename(to_name, oto_name) == -1)
err(1, "%s: rename", to_name);
to_name = oto_name;
}
/*
* If provided a set of flags, set them, otherwise, preserve the
* flags, except for the dump flag.
*/
#if ! HAVE_NBTOOL_CONFIG_H
if (!dounpriv && chflags(to_name,
flags & SETFLAGS ? fileflags : from_sb.st_flags & ~UF_NODUMP) == -1)
{
if (errno != EOPNOTSUPP || (from_sb.st_flags & ~UF_NODUMP) != 0)
warn("%s: chflags", to_name);
}
#endif
metadata_log(to_name, "file", tv, NULL, digestresult);
free(digestresult);
}
/*
* copy --
* copy from one file to another
*/
char *
copy(int from_fd, char *from_name, int to_fd, char *to_name, off_t size)
{
ssize_t nr, nw;
int serrno;
char *p;
char buf[MAXBSIZE];
MD5_CTX ctxMD5;
RMD160_CTX ctxRMD160;
SHA1_CTX ctxSHA1;
switch (digesttype) {
case DIGEST_MD5:
MD5Init(&ctxMD5);
break;
case DIGEST_RMD160:
RMD160Init(&ctxRMD160);
break;
case DIGEST_SHA1:
SHA1Init(&ctxSHA1);
break;
case DIGEST_NONE:
default:
break;
}
/*
* There's no reason to do anything other than close the file
* now if it's empty, so let's not bother.
*/
if (size > 0) {
/*
* Mmap and write if less than 8M (the limit is so we
* don't totally trash memory on big files). This is
* really a minor hack, but it wins some CPU back.
*/
if (size <= 8 * 1048576) {
if ((p = mmap(NULL, (size_t)size, PROT_READ,
MAP_FILE|MAP_SHARED, from_fd, (off_t)0))
== MAP_FAILED) {
goto mmap_failed;
}
#if defined(MADV_SEQUENTIAL) && !defined(__APPLE__)
if (madvise(p, (size_t)size, MADV_SEQUENTIAL) == -1
&& errno != EOPNOTSUPP)
warnx("madvise: %s", strerror(errno));
#endif
if (write(to_fd, p, size) != size) {
serrno = errno;
(void)unlink(to_name);
errx(1, "%s: write: %s",
to_name, strerror(serrno));
}
switch (digesttype) {
case DIGEST_MD5:
MD5Update(&ctxMD5, p, size);
break;
case DIGEST_RMD160:
RMD160Update(&ctxRMD160, p, size);
break;
case DIGEST_SHA1:
SHA1Update(&ctxSHA1, p, size);
break;
default:
break;
}
(void)munmap(p, size);
} else {
mmap_failed:
while ((nr = read(from_fd, buf, sizeof(buf))) > 0) {
if ((nw = write(to_fd, buf, nr)) != nr) {
serrno = errno;
(void)unlink(to_name);
errx(1, "%s: write: %s", to_name,
strerror(nw > 0 ? EIO : serrno));
}
switch (digesttype) {
case DIGEST_MD5:
MD5Update(&ctxMD5, buf, nr);
break;
case DIGEST_RMD160:
RMD160Update(&ctxRMD160, buf, nr);
break;
case DIGEST_SHA1:
SHA1Update(&ctxSHA1, buf, nr);
break;
default:
break;
}
}
if (nr != 0) {
serrno = errno;
(void)unlink(to_name);
errx(1, "%s: read: %s", from_name, strerror(serrno));
}
}
}
switch (digesttype) {
case DIGEST_MD5:
return MD5End(&ctxMD5, NULL);
case DIGEST_RMD160:
return RMD160End(&ctxRMD160, NULL);
case DIGEST_SHA1:
return SHA1End(&ctxSHA1, NULL);
default:
return NULL;
}
}
/*
* strip --
* use strip(1) to strip the target file
*/
void
strip(char *to_name)
{
int serrno, status;
char *stripprog;
switch (vfork()) {
case -1:
serrno = errno;
(void)unlink(to_name);
errx(1, "vfork: %s", strerror(serrno));
/*NOTREACHED*/
case 0:
stripprog = getenv("STRIP");
if (stripprog == NULL)
stripprog = _PATH_STRIP;
if (stripArgs) {
/*
* build up a command line and let /bin/sh
* parse the arguments
*/
char* cmd = (char*)malloc(sizeof(char)*
(3+strlen(stripprog)+
strlen(stripArgs)+
strlen(to_name)));
if (cmd == NULL)
errx(1, "%s", strerror(ENOMEM));
sprintf(cmd, "%s %s %s", stripprog, stripArgs, to_name);
execl(_PATH_BSHELL, "sh", "-c", cmd, NULL);
} else
execlp(stripprog, "strip", to_name, NULL);
warn("%s: exec of strip", stripprog);
_exit(1);
/*NOTREACHED*/
default:
if (wait(&status) == -1 || status)
(void)unlink(to_name);
}
}
/*
* afterinstall --
* run provided command on the target file or directory after it's been
* installed and stripped, but before permissions are set or it's renamed
*/
void
afterinstall(const char *command, const char *to_name, int errunlink)
{
int serrno, status;
char *cmd;
switch (vfork()) {
case -1:
serrno = errno;
if (errunlink)
(void)unlink(to_name);
errx(1, "vfork: %s", strerror(serrno));
/*NOTREACHED*/
case 0:
/*
* build up a command line and let /bin/sh
* parse the arguments
*/
cmd = (char*)malloc(sizeof(char)*
(2+strlen(command)+
strlen(to_name)));
if (cmd == NULL)
errx(1, "%s", strerror(ENOMEM));
sprintf(cmd, "%s %s", command, to_name);
execl(_PATH_BSHELL, "sh", "-c", cmd, NULL);
warn("%s: exec of after install command", command);
_exit(1);
/*NOTREACHED*/
default:
if ((wait(&status) == -1 || status) && errunlink)
(void)unlink(to_name);
}
}
/*
* backup --
* backup file "to_name" to to_name.suffix
* if suffix contains a "%", it's taken as a printf(3) pattern
* used for a numbered backup.
*/
void
backup(const char *to_name)
{
char bname[FILENAME_MAX];
if (numberedbackup) {
/* Do numbered backup */
int cnt;
char suffix_expanded[FILENAME_MAX];
cnt=0;
do {
(void)snprintf(suffix_expanded, FILENAME_MAX, suffix,
cnt);
(void)snprintf(bname, FILENAME_MAX, "%s%s", to_name,
suffix_expanded);
cnt++;
} while (access(bname, F_OK) == 0);
} else {
/* Do simple backup */
(void)snprintf(bname, FILENAME_MAX, "%s%s", to_name, suffix);
}
(void)rename(to_name, bname);
}
/*
* install_dir --
* build directory hierarchy
*/
void
install_dir(char *path, u_int flags)
{
char *p;
struct stat sb;
int ch;
for (p = path;; ++p)
if (!*p || (p != path && *p == '/')) {
ch = *p;
*p = '\0';
if (stat(path, &sb)) {
if (errno != ENOENT || mkdir(path, 0777) < 0) {
err(1, "%s: mkdir", path);
}
}
if (!(*p = ch))
break;
}
if (afterinstallcmd != NULL)
afterinstall(afterinstallcmd, path, 0);
if (!dounpriv && (
((flags & (HASUID | HASGID)) && chown(path, uid, gid) == -1)
|| chmod(path, mode) == -1 )) {
warn("%s: chown/chmod", path);
}
metadata_log(path, "dir", NULL, NULL, NULL);
}
/*
* metadata_log --
* if metafp is not NULL, output mtree(8) full path name and settings to
* metafp, to allow permissions to be set correctly by other tools.
*/
void
metadata_log(const char *path, const char *type, struct timeval *tv,
const char *link, const char *digestresult)
{
static const char extra[] = { ' ', '\t', '\n', '\\', '#', '\0' };
const char *p;
char *buf;
size_t destlen;
struct flock metalog_lock;
if (!metafp)
return;
buf = (char *)malloc(4 * strlen(path) + 1); /* buf for strsvis(3) */
if (buf == NULL) {
warnx("%s", strerror(ENOMEM));
return;
}
/* lock log file */
metalog_lock.l_start = 0;
metalog_lock.l_len = 0;
metalog_lock.l_whence = SEEK_SET;
metalog_lock.l_type = F_WRLCK;
if (fcntl(fileno(metafp), F_SETLKW, &metalog_lock) == -1) {
warn("can't lock %s", metafile);
return;
}
p = path; /* remove destdir */
if (destdir) {
destlen = strlen(destdir);
if (strncmp(p, destdir, destlen) == 0 &&
(p[destlen] == '/' || p[destlen] == '\0'))
p += destlen;
}
while (*p && *p == '/') /* remove leading /s */
p++;
strsvis(buf, p, VIS_CSTYLE, extra); /* encode name */
p = buf;
/* print details */
fprintf(metafp, ".%s%s type=%s mode=%#o", *p ? "/" : "", p, type, mode);
if (link) {
strsvis(buf, link, VIS_CSTYLE, extra); /* encode link */
fprintf(metafp, " link=%s", buf);
}
if (owner)
fprintf(metafp, " uname=%s", owner);
if (group)
fprintf(metafp, " gname=%s", group);
if (fflags)
fprintf(metafp, " flags=%s", fflags);
if (tags)
fprintf(metafp, " tags=%s", tags);
if (tv != NULL && dopreserve)
fprintf(metafp, " time=%ld.%ld", tv[1].tv_sec, tv[1].tv_usec);
if (digestresult && digest)
fprintf(metafp, " %s=%s", digest, digestresult);
fputc('\n', metafp);
fflush(metafp); /* flush output */
/* unlock log file */
metalog_lock.l_type = F_UNLCK;
if (fcntl(fileno(metafp), F_SETLKW, &metalog_lock) == -1) {
warn("can't unlock %s", metafile);
}
free(buf);
}
/*
* xbasename --
* libc basename(3) that returns a pointer to a static buffer
* instead of overwriting that passed-in string.
*/
char *
xbasename(char *path)
{
static char tmp[MAXPATHLEN];
(void)strlcpy(tmp, path, sizeof(tmp));
return (basename(tmp));
}
/*
* xdirname --
* libc dirname(3) that returns a pointer to a static buffer
* instead of overwriting that passed-in string.
*/
char *
xdirname(char *path)
{
static char tmp[MAXPATHLEN];
(void)strlcpy(tmp, path, sizeof(tmp));
return (dirname(tmp));
}
/*
* usage --
* print a usage message and die
*/
void
usage(void)
{
const char *prog;
prog = getprogname();
(void)fprintf(stderr,
"usage: %s [-Ubcprs] [-M log] [-D dest] [-T tags] [-B suffix]\n"
" [-a aftercmd] [-f flags] [-m mode] [-N dbdir] [-o owner] [-g group] \n"
" [-l linkflags] [-h hash] [-S stripflags] file1 file2\n"
" %s [-Ubcprs] [-M log] [-D dest] [-T tags] [-B suffix]\n"
" [-a aftercmd] [-f flags] [-m mode] [-N dbdir] [-o owner] [-g group]\n"
" [-l linkflags] [-h hash] [-S stripflags] file1 ... fileN directory\n"
" %s -d [-Up] [-M log] [-D dest] [-T tags] [-a aftercmd] [-m mode]\n"
" [-N dbdir] [-o owner] [-g group] directory ...\n",
prog, prog, prog);
exit(1);
}
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