util: fix error checking after fgets()

fgets() does not set errno on EOF.
2011-12-03 02:08:52 +01:00
parent 91b684c730
commit 35d50f55f3
1 changed files with 4 additions and 4 deletions
@@ -516,7 +516,7 @@ int get_parent_of_pid(pid_t pid, pid_t *_ppid) {
                return -errno;

        if (!(fgets(line, sizeof(line), f))) {
-                r = -errno;
+                r = feof(f) ? -EIO : -errno;
                fclose(f);
                return r;
        }
@@ -561,7 +561,7 @@ int get_starttime_of_pid(pid_t pid, unsigned long long *st) {
                return -errno;

        if (!(fgets(line, sizeof(line), f))) {
-                r = -errno;
+                r = feof(f) ? -EIO : -errno;
                fclose(f);
                return r;
        }
@@ -708,7 +708,7 @@ int read_one_line_file(const char *fn, char **line) {
                return -errno;

        if (!(fgets(t, sizeof(t), f))) {
-                r = -errno;
+                r = feof(f) ? -EIO : -errno;
                goto finish;
        }

@@ -3266,7 +3266,7 @@ int get_ctty_devnr(pid_t pid, dev_t *d) {
                return -errno;

        if (!fgets(line, sizeof(line), f)) {
-                k = -errno;
+                k = feof(f) ? -EIO : -errno;
                fclose(f);
                return k;
        }