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Refactor, check return value from fgets()

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Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
This commit is contained in:
Joachim Wiberg committed 2021-04-04 12:35:35 +02:00
1 parent 5342881bf4
commit d40b426c1b
1 file changed
+10 -8
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src/cgutil.c
+10 -8
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@@ -96,35 +96,37 @@ char *pid_cmdline(int pid, char *buf, size_t len)
char *pid_comm(int pid, char *buf, size_t len) char *pid_comm(int pid, char *buf, size_t len)
{ {
char *ptr = NULL;
FILE *fp; FILE *fp;
fp = fopenf("r", "/proc/%d/comm", pid); fp = fopenf("r", "/proc/%d/comm", pid);
if (!fp) if (!fp)
return NULL; return NULL;
fgets(buf, len, fp); if (fgets(buf, len, fp))
ptr = chomp(buf);
fclose(fp); fclose(fp);
return chomp(buf); return ptr;
} }
char *pid_cgroup(int pid, char *buf, size_t len) char *pid_cgroup(int pid, char *buf, size_t len)
{ {
char *ptr; char *ptr = NULL;
FILE *fp; FILE *fp;
fp = fopenf("r", "/proc/%d/cgroup", pid); fp = fopenf("r", "/proc/%d/cgroup", pid);
if (!fp) if (!fp)
return NULL; return NULL;
fgets(buf, len, fp); if (fgets(buf, len, fp))
ptr = chomp(buf);
fclose(fp); fclose(fp);
ptr = strchr(buf, '/'); if (ptr)
if (!ptr) ptr = strchr(buf, '/');
return NULL;
return chomp(ptr); return ptr;
} }
static uint64_t cgroup_uint64(char *path, char *file) static uint64_t cgroup_uint64(char *path, char *file)