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Correct a bug in gzip(1): make sure that initialize isb with fstat() on

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input file before using it.

PR:		bin/147275
Submitted by:	thomas
MFC after:	1 week
This commit is contained in:
Xin LI 2010-06-07 10:09:40 +00:00
parent 3a2c6562f3
commit 09e979e915
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=208888
1 changed files with 9 additions and 3 deletions
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12
usr.bin/gzip/gzip.c
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@ -1224,17 +1224,23 @@ file_compress(char *file, char *outfile, size_t outsize)
return -1;
}
#ifndef SMALL
if (fstat(in, &isb) != 0) {
maybe_warn("couldn't stat: %s", file);
close(in);
return -1;
}
#endif
if (cflag == 0) {
#ifndef SMALL
if (fstat(in, &isb) == 0) {
if (isb.st_nlink > 1 && fflag == 0) {
if (isb.st_nlink != 1 && fflag == 0) {
maybe_warnx("%s has %d other link%s -- "
"skipping", file, isb.st_nlink - 1,
isb.st_nlink == 1 ? "" : "s");
close(in);
return -1;
}
}
if (fflag == 0 && (suff = check_suffix(file, 0))
&& suff->zipped[0] != 0) {