sd-daemon: introduce sd_pid_notify() and sd_pid_notifyf()

[elogind.git] / src / shared / util.c

diff --git a/src/shared/util.c b/src/shared/util.c
index 0cc51e0962607fbdc36bf32e851836415c68401e..7a4dacd2138ca52eff63e338ddf255d893e516ef 100644 (file)
--- a/src/shared/util.c
+++ b/src/shared/util.c
@@ -73,6 +73,7 @@
 #include "log.h"
 #include "strv.h"
 #include "label.h"
+#include "mkdir.h"
 #include "path-util.h"
 #include "exit-status.h"
 #include "hashmap.h"
@@ -1370,23 +1371,27 @@ bool ignore_file(const char *filename) {
         assert(filename);
 
         if (endswith(filename, "~"))
-                return false;
+                return true;
 
         return ignore_file_allow_backup(filename);
 }
 
 int fd_nonblock(int fd, bool nonblock) {
-        int flags;
+        int flags, nflags;
 
         assert(fd >= 0);
 
-        if ((flags = fcntl(fd, F_GETFL, 0)) < 0)
+        flags = fcntl(fd, F_GETFL, 0);
+        if (flags < 0)
                 return -errno;
 
         if (nonblock)
-                flags |= O_NONBLOCK;
+                nflags = flags | O_NONBLOCK;
         else
-                flags &= ~O_NONBLOCK;
+                nflags = flags & ~O_NONBLOCK;
+
+        if (nflags == flags)
+                return 0;
 
         if (fcntl(fd, F_SETFL, flags) < 0)
                 return -errno;
@@ -1395,17 +1400,21 @@ int fd_nonblock(int fd, bool nonblock) {
 }
 
 int fd_cloexec(int fd, bool cloexec) {
-        int flags;
+        int flags, nflags;
 
         assert(fd >= 0);
 
-        if ((flags = fcntl(fd, F_GETFD, 0)) < 0)
+        flags = fcntl(fd, F_GETFD, 0);
+        if (flags < 0)
                 return -errno;
 
         if (cloexec)
-                flags |= FD_CLOEXEC;
+                nflags = flags | FD_CLOEXEC;
         else
-                flags &= ~FD_CLOEXEC;
+                nflags = flags & ~FD_CLOEXEC;
+
+        if (nflags == flags)
+                return 0;
 
         if (fcntl(fd, F_SETFD, flags) < 0)
                 return -errno;
@@ -3344,22 +3353,49 @@ char *ellipsize(const char *s, size_t length, unsigned percent) {
         return ellipsize_mem(s, strlen(s), length, percent);
 }
 
-int touch(const char *path) {
+int touch_file(const char *path, bool parents, usec_t stamp, uid_t uid, gid_t gid, mode_t mode) {
         _cleanup_close_ int fd;
+        int r;
 
         assert(path);
 
-        /* This just opens the file for writing, ensuring it
-         * exists. It doesn't call utimensat() the way /usr/bin/touch
-         * does it. */
+        if (parents)
+                mkdir_parents(path, 0755);
 
-        fd = open(path, O_WRONLY|O_CREAT|O_CLOEXEC|O_NOCTTY, 0644);
+        fd = open(path, O_WRONLY|O_CREAT|O_CLOEXEC|O_NOCTTY, mode > 0 ? mode : 0644);
         if (fd < 0)
                 return -errno;
 
+        if (mode > 0) {
+                r = fchmod(fd, mode);
+                if (r < 0)
+                        return -errno;
+        }
+
+        if (uid != (uid_t) -1 || gid != (gid_t) -1) {
+                r = fchown(fd, uid, gid);
+                if (r < 0)
+                        return -errno;
+        }
+
+        if (stamp != (usec_t) -1) {
+                struct timespec ts[2];
+
+                timespec_store(&ts[0], stamp);
+                ts[1] = ts[0];
+                r = futimens(fd, ts);
+        } else
+                r = futimens(fd, NULL);
+        if (r < 0)
+                return -errno;
+
         return 0;
 }
 
+int touch(const char *path) {
+        return touch_file(path, false, (usec_t) -1, (uid_t) -1, (gid_t) -1, 0);
+}
+
 char *unquote(const char *s, const char* quotes) {
         size_t l;
         assert(s);
@@ -6093,7 +6129,7 @@ int container_get_leader(const char *machine, pid_t *pid) {
 
 int namespace_open(pid_t pid, int *pidns_fd, int *mntns_fd, int *netns_fd, int *root_fd) {
         _cleanup_close_ int pidnsfd = -1, mntnsfd = -1, netnsfd = -1;
-        int rfd;
+        int rfd = -1;
 
         assert(pid >= 0);
 
@@ -6452,8 +6488,7 @@ void hexdump(FILE *f, const void *p, size_t s) {
         }
 }
 
-int update_reboot_param_file(const char *param)
-{
+int update_reboot_param_file(const char *param) {
         int r = 0;
 
         if (param) {