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bootmisc: Check return value from getgroup() API

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Found by Coverity Scan.

Signed-off-by: Joachim Nilsson <troglobit@gmail.com>
This commit is contained in:
Joachim Nilsson
2016-09-04 23:13:51 +02:00
parent 4aa569de44
commit bb0505f57c
1 changed files with 14 additions and 4 deletions
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plugins/bootmisc.c
+14 -4
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@@ -35,6 +35,8 @@
*/
static void setup(void *UNUSED(arg))
{
gid_t gid;
_d("Setting up FHS structure in /var ...");
makedir("/var/cache", 0755);
makedir("/var/games", 0755);
@@ -61,19 +63,27 @@ static void setup(void *UNUSED(arg))
makedir("/var/tmp", 0755);
makedir("/var/empty", 0755);
/*
* If /etc/group or "utmp" group is missing,
* default to "root"/"wheel" group
*/
_d("Setting up necessary UTMP files ...");
gid = getgroup("utmp");
if (gid < 0)
gid = 0;
touch("/var/run/utmp");
chmod("/var/run/utmp", 0664);
chown("/var/run/utmp", 0, getgroup("utmp"));
chown("/var/run/utmp", 0, gid);
touch("/var/log/wtmp");
chmod("/var/log/wtmp", 0664);
chown("/var/log/wtmp", 0, getgroup("utmp"));
chown("/var/log/wtmp", 0, gid);
touch("/var/log/btmp");
chmod("/var/log/btmp", 0600);
chown("/var/log/btmp", 0, getgroup("utmp"));
chown("/var/log/btmp", 0, gid);
touch("/var/log/lastlog");
chmod("/var/log/lastlog", 0664);
chown("/var/log/lastlog", 0, getgroup("utmp"));
chown("/var/log/lastlog", 0, gid);
/* Set BOOT_TIME UTMP entry */
utmp_set_boot();