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libbb: add xgetgrnam too. ~0 code size change

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This commit is contained in:
Denis Vlasenko 2008-12-05 16:23:06 +00:00
parent d324e1b808
commit 15437e3e2a
3 changed files with 11 additions and 8 deletions
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1
include/libbb.h
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@ -703,6 +703,7 @@ void xget_uidgid(struct bb_uidgid_t*, const char*) FAST_FUNC;
/* chown-like handling of "user[:[group]" */
void parse_chown_usergroup_or_die(struct bb_uidgid_t *u, char *user_group) FAST_FUNC;
struct passwd* xgetpwnam(const char *name) FAST_FUNC;
struct group* xgetgrnam(const char *name) FAST_FUNC;
struct passwd* xgetpwuid(uid_t uid) FAST_FUNC;
struct group* xgetgrgid(gid_t gid) FAST_FUNC;
char* xuid2uname(uid_t uid) FAST_FUNC;

14
libbb/bb_pwd.c
View File

@ -23,7 +23,14 @@ struct passwd* FAST_FUNC xgetpwnam(const char *name)
return pw;
}
/* xgetgrnam too? */
struct group* FAST_FUNC xgetgrnam(const char *name)
{
struct group *gr = getgrnam(name);
if (!gr)
bb_error_msg_and_die("unknown group %s", name);
return gr;
}
struct passwd* FAST_FUNC xgetpwuid(uid_t uid)
{
@ -89,10 +96,7 @@ long FAST_FUNC xgroup2gid(const char *name)
{
struct group *mygroup;
mygroup = getgrnam(name);
if (mygroup == NULL)
bb_error_msg_and_die("unknown group %s", name);
mygroup = xgetgrnam(name);
return mygroup->gr_gid;
}

4
loginutils/addgroup.c
View File

@ -158,10 +158,8 @@ int addgroup_main(int argc UNUSED_PARAM, char **argv)
/* check if group and user exist */
xuname2uid(argv[0]); /* unknown user: exit */
xgroup2gid(argv[1]); /* unknown group: exit */
// race here!
gr = xgetgrnam(argv[1]); /* unknown group: exit */
/* check if user is already in this group */
gr = getgrnam(argv[1]);
for (; *(gr->gr_mem) != NULL; (gr->gr_mem)++) {
if (!strcmp(argv[0], *(gr->gr_mem))) {
/* user is already in group: do nothing */