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After each strsep(&p) check that p is valid. 

If not the .meta file is corrupted (build interrupted?)
issue a warning and declare target oodate.
This commit is contained in:
sjg 2011-06-22 21:13:12 +00:00
parent 5abf4f43b3
commit ebe0193f6c
1 changed files with 20 additions and 3 deletions
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23
usr.bin/make/meta.c
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@ -1,4 +1,4 @@
/* $NetBSD: meta.c,v 1.19 2011/06/11 02:10:48 sjg Exp $ */
/* $NetBSD: meta.c,v 1.20 2011/06/22 21:13:12 sjg Exp $ */
/*
* Implement 'meta' mode.
@ -809,6 +809,17 @@ string_match(const void *p, const void *q)
*/
#define LDIR_VNAME_FMT ".meta.%d.ldir"
/*
* It is possible that a .meta file is corrupted,
* if we detect this we want to reproduce it.
* Setting oodate TRUE will have that effect.
*/
#define CHECK_VALID_META(p) if (!(p && *p)) { \
warnx("%s: %d: malformed", fname, lineno); \
oodate = TRUE; \
continue; \
}
Boolean
meta_oodate(GNode *gn, Boolean oodate)
{
@ -882,9 +893,11 @@ meta_oodate(GNode *gn, Boolean oodate)
lineno++;
if (buf[x - 1] == '\n')
buf[x - 1] = '\0';
else
else {
warnx("%s: %d: line truncated at %u", fname, lineno, x);
oodate = TRUE;
break;
}
/* Find the start of the build monitor section. */
if (!f) {
if (strncmp(buf, "-- filemon", 10) == 0) {
@ -940,6 +953,7 @@ meta_oodate(GNode *gn, Boolean oodate)
* re-initialize 'latestdir' to any pre-saved
* value for the current 'pid' and 'CWD' if none.
*/
CHECK_VALID_META(p);
pid = atoi(p);
if (pid > 0 && pid != lastpid) {
char *ldir;
@ -969,6 +983,8 @@ meta_oodate(GNode *gn, Boolean oodate)
break;
}
CHECK_VALID_META(p);
/* Process according to record type. */
switch (buf[0]) {
case 'X': /* eXit */
@ -1020,6 +1036,7 @@ meta_oodate(GNode *gn, Boolean oodate)
/* we want the target */
if (strsep(&p, " ") == NULL)
continue;
CHECK_VALID_META(p);
/* 'L' and 'M' put single quotes around the args */
if (*p == '\'') {
char *ep;