tree-wide: check if errno is greater than zero (2)

[elogind.git] / src / basic / cgroup-util.c

diff --git a/src/basic/cgroup-util.c b/src/basic/cgroup-util.c
index b5de1cc143f55f9ec8c8ed719d22a873fb9eef75..708e566a6803bcfea0814f23c00209ed84196996 100644 (file)
--- a/src/basic/cgroup-util.c
+++ b/src/basic/cgroup-util.c
@@ -87,7 +87,7 @@ int cg_read_pid(FILE *f, pid_t *_pid) {
                 if (feof(f))
                         return 0;
 
-                return errno ? -errno : -EIO;
+                return errno > 0 ? -errno : -EIO;
         }
 
         if (ul <= 0)
@@ -647,7 +647,7 @@ int cg_trim(const char *controller, const char *path, bool delete_root) {
         if (nftw(fs, trim_cb, 64, FTW_DEPTH|FTW_MOUNT|FTW_PHYS) != 0) {
                 if (errno == ENOENT)
                         r = 0;
-                else if (errno != 0)
+                else if (errno > 0)
                         r = -errno;
                 else
                         r = -EIO;
@@ -747,8 +747,7 @@ int cg_attach_fallback(const char *controller, const char *path, pid_t pid) {
         return r;
 }
 
-/// UNNEEDED by elogind
-#if 0
+#if 0 /// UNNEEDED by elogind
 int cg_set_group_access(
                 const char *controller,
                 const char *path,
@@ -1174,8 +1173,7 @@ int cg_mangle_path(const char *path, char **result) {
 }
 
 int cg_get_root_path(char **path) {
-/// elogind does not support systemd scopes and slices
-#if 0
+#if 0 /// elogind does not support systemd scopes and slices
         char *p, *e;
         int r;
 
@@ -1265,8 +1263,7 @@ int cg_pid_get_path_shifted(pid_t pid, const char *root, char **cgroup) {
         return 0;
 }
 
-/// UNNEEDED by elogind
-#if 0
+#if 0 /// UNNEEDED by elogind
 int cg_path_decode_unit(const char *cgroup, char **unit){
         char *c, *s;
         size_t n;
@@ -1585,8 +1582,7 @@ int cg_pid_get_session(pid_t pid, char **session) {
         return cg_path_get_session(cgroup, session);
 }
 
-/// UNNEEDED by elogind
-#if 0
+#if 0 /// UNNEEDED by elogind
 int cg_path_get_owner_uid(const char *path, uid_t *uid) {
         _cleanup_free_ char *slice = NULL;
         char *start, *end;
@@ -1791,8 +1787,7 @@ bool cg_controller_is_valid(const char *p) {
         return true;
 }
 
-/// UNNEEDED by elogind
-#if 0
+#if 0 /// UNNEEDED by elogind
 int cg_slice_to_path(const char *unit, char **ret) {
         _cleanup_free_ char *p = NULL, *s = NULL, *e = NULL;
         const char *dash;
@@ -1874,8 +1869,7 @@ int cg_set_attribute(const char *controller, const char *path, const char *attri
         return write_string_file(p, value, 0);
 }
 
-/// UNNEEDED by elogind
-#if 0
+#if 0 /// UNNEEDED by elogind
 int cg_get_attribute(const char *controller, const char *path, const char *attribute, char **ret) {
         _cleanup_free_ char *p = NULL;
         int r;
@@ -2108,8 +2102,7 @@ int cg_mask_supported(CGroupMask *ret) {
         return 0;
 }
 
-/// UNNEEDED by elogind
-#if 0
+#if 0 /// UNNEEDED by elogind
 int cg_kernel_controllers(Set *controllers) {
         _cleanup_fclose_ FILE *f = NULL;
         char buf[LINE_MAX];
@@ -2142,7 +2135,7 @@ int cg_kernel_controllers(Set *controllers) {
                         if (feof(f))
                                 break;
 
-                        if (ferror(f) && errno != 0)
+                        if (ferror(f) && errno > 0)
                                 return -errno;
 
                         return -EBADMSG;
@@ -2202,8 +2195,7 @@ int cg_unified(void) {
         return unified_cache;
 }
 
-/// UNNEEDED by elogind
-#if 0
+#if 0 /// UNNEEDED by elogind
 void cg_unified_flush(void) {
         unified_cache = -1;
 }
@@ -2292,8 +2284,7 @@ bool cg_is_legacy_wanted(void) {
 }
 #endif // 0
 
-/// UNNEEDED by elogind
-#if 0
+#if 0 /// UNNEEDED by elogind
 int cg_cpu_shares_parse(const char *s, uint64_t *ret) {
         uint64_t u;
         int r;