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Correct argc verification (don't crash).

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Obtained from:	TrustedBSD Project
Sponsored by:	DARPA, Network Associates Laboratories
This commit is contained in:
Brian Feldman 2002-10-10 17:11:20 +00:00
parent 469fda7e25
commit 878382facb
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=104801
1 changed files with 7 additions and 2 deletions
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9
usr.sbin/extattr/rmextattr.c
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@ -102,7 +102,8 @@ main(int argc, char *argv[])
char *buf, *visbuf, *p;
const char *options, *attrname;
int buflen, visbuflen, ch, error, i, arg_counter, attrnamespace;
int buflen, visbuflen, ch, error, i, arg_counter, attrnamespace,
minargc;
int flag_force = 0;
int flag_nofollow = 0;
@ -119,15 +120,19 @@ main(int argc, char *argv[])
if (!strcmp(p, "getextattr")) {
what = EAGET;
options = "fhqsx";
minargc = 3;
} else if (!strcmp(p, "setextattr")) {
what = EASET;
options = "fhq";
minargc = 4;
} else if (!strcmp(p, "rmextattr")) {
what = EARM;
options = "fhq";
minargc = 3;
} else if (!strcmp(p, "lsextattr")) {
what = EALS;
options = "fhq";
minargc = 2;
} else {
usage();
}
@ -158,7 +163,7 @@ main(int argc, char *argv[])
argc -= optind;
argv += optind;
if (argc < 2)
if (argc < minargc)
usage();
error = extattr_string_to_namespace(argv[0], &attrnamespace);