logind: update empty and "infinity" handling for [User]TasksMax (#3835)

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

diff --git a/src/basic/fd-util.c b/src/basic/fd-util.c
index 6c3063298b21e688bf6ff9cd722a628a9178764b..3eb3324b57bc2ae53ecbca7e4baf65be3c3f50ab 100644 (file)
--- a/src/basic/fd-util.c
+++ b/src/basic/fd-util.c
@@ -186,6 +186,12 @@ int fd_cloexec(int fd, bool cloexec) {
         return 0;
 }
 
+void stdio_unset_cloexec(void) {
+        fd_cloexec(STDIN_FILENO, false);
+        fd_cloexec(STDOUT_FILENO, false);
+        fd_cloexec(STDERR_FILENO, false);
+}
+
 _pure_ static bool fd_in_set(int fd, const int fdset[], unsigned n_fdset) {
         unsigned i;
 
@@ -231,7 +237,7 @@ int close_all_fds(const int except[], unsigned n_except) {
         while ((de = readdir(d))) {
                 int fd = -1;
 
-                if (hidden_file(de->d_name))
+                if (hidden_or_backup_file(de->d_name))
                         continue;
 
                 if (safe_atoi(de->d_name, &fd) < 0)
@@ -359,4 +365,18 @@ bool fdname_is_valid(const char *s) {
 
         return p - s < 256;
 }
+
+int fd_get_path(int fd, char **ret) {
+        char procfs_path[strlen("/proc/self/fd/") + DECIMAL_STR_MAX(int)];
+        int r;
+
+        xsprintf(procfs_path, "/proc/self/fd/%i", fd);
+
+        r = readlink_malloc(procfs_path, ret);
+
+        if (r == -ENOENT) /* If the file doesn't exist the fd is invalid */
+                return -EBADF;
+
+        return r;
+}
 #endif // 0