journal: split user logs into their own journal files

[elogind.git] / src / util.c

diff --git a/src/util.c b/src/util.c
index 99737e4e63012ba66f33b8b86d679f0b2a39d129..a3cfe864b6e44c5cf38e04c7c0a18386be0364e4 100644 (file)
--- a/src/util.c
+++ b/src/util.c
@@ -3529,6 +3529,22 @@ int chmod_and_chown(const char *path, mode_t mode, uid_t uid, gid_t gid) {
         return 0;
 }
 
+int fchmod_and_fchown(int fd, mode_t mode, uid_t uid, gid_t gid) {
+        assert(fd >= 0);
+
+        /* Under the assumption that we are running privileged we
+         * first change the access mode and only then hand out
+         * ownership to avoid a window where access is too open. */
+
+        if (fchmod(fd, mode) < 0)
+                return -errno;
+
+        if (fchown(fd, uid, gid) < 0)
+                return -errno;
+
+        return 0;
+}
+
 cpu_set_t* cpu_set_malloc(unsigned *ncpus) {
         cpu_set_t *r;
         unsigned n = 1024;