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-rw-r--r--include/libbb.h1
-rw-r--r--libbb/bb_pwd.c14
-rw-r--r--loginutils/addgroup.c4
3 files changed, 11 insertions, 8 deletions
diff --git a/include/libbb.h b/include/libbb.h
index 80311db..16e8f48 100644
--- a/include/libbb.h
+++ b/include/libbb.h
@@ -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;
diff --git a/libbb/bb_pwd.c b/libbb/bb_pwd.c
index 5dbc58d..d728577 100644
--- a/libbb/bb_pwd.c
+++ b/libbb/bb_pwd.c
@@ -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;
}
diff --git a/loginutils/addgroup.c b/loginutils/addgroup.c
index 2a840d7..5032d7b 100644
--- a/loginutils/addgroup.c
+++ b/loginutils/addgroup.c
@@ -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 */