various: do not include file names directly in error messages

git grep -l 'Failed to open /'|xargs sed -r -i 's|"Failed to open (/[^ ]+): %m"|"Failed to open %s: %m", "\1"|g'
git grep -l $'Failed to open \'/'|xargs sed -r -i $'s|"Failed to open \'(/[^ ]+)\': %m"|"Failed to open %s: %m", "\\1"|g'
git grep -l "Failed to open /"|xargs sed -r -i $'s|"Failed to open (/[^ ]+), ignoring: %m"|"Failed to open %s, ignoring: %m", "\\1"|g'
+ some manual fixups.

src/core/automount.c

@@ -344,7 +344,7 @@ static int open_dev_autofs(Manager *m) {
 
         m->dev_autofs_fd = open("/dev/autofs", O_CLOEXEC|O_RDONLY);
         if (m->dev_autofs_fd < 0)
-                return log_error_errno(errno, "Failed to open /dev/autofs: %m");
+                return log_error_errno(errno, "Failed to open %s: %m", "/dev/autofs");
 
         init_autofs_dev_ioctl(&param);
         r = RET_NERRNO(ioctl(m->dev_autofs_fd, AUTOFS_DEV_IOCTL_VERSION, &param));

src/core/import-creds.c

@@ -626,7 +626,7 @@ static int import_credentials_initrd(ImportCredentialContext *c) {
                 if (errno == ENOENT)
                         log_debug_errno(errno, "No credentials passed from initrd.");
                 else
-                        log_warning_errno(errno, "Failed to open '/run/credentials/@initrd', ignoring: %m");
+                        log_warning_errno(errno, "Failed to open '%s', ignoring: %m", "/run/credentials/@initrd");
                 return 0;
         }
 

src/core/main.c

@@ -245,7 +245,7 @@ static int console_setup(void) {
 
         tty_fd = open_terminal("/dev/console", O_RDWR|O_NOCTTY|O_CLOEXEC);
         if (tty_fd < 0)
-                return log_error_errno(tty_fd, "Failed to open /dev/console: %m");
+                return log_error_errno(tty_fd, "Failed to open %s: %m", "/dev/console");
 
         /* We don't want to force text mode. Plymouth may be showing pictures already from initrd. */
         reset_dev_console_fd(tty_fd, /* switch_to_text= */ false);

src/core/manager.c

@@ -497,7 +497,7 @@ static int manager_enable_special_signals(Manager *m) {
         fd = open_terminal("/dev/tty0", O_RDWR|O_NOCTTY|O_CLOEXEC);
         if (fd < 0)
                 /* Support systems without virtual console (ENOENT) gracefully */
-                log_full_errno(fd == -ENOENT ? LOG_DEBUG : LOG_WARNING, fd, "Failed to open /dev/tty0, ignoring: %m");
+                log_full_errno(fd == -ENOENT ? LOG_DEBUG : LOG_WARNING, fd, "Failed to open %s, ignoring: %m", "/dev/tty0");
         else {
                 /* Enable that we get SIGWINCH on kbrequest */
                 if (ioctl(fd, KDSIGACCEPT, SIGWINCH) < 0)

src/core/namespace.c

@@ -2264,7 +2264,7 @@ static int apply_mounts(
                 if (reterr_path)
                         *reterr_path = strdup("/proc/self/mountinfo");
 
-                return log_debug_errno(r, "Failed to open /proc/self/mountinfo: %m");
+                return log_debug_errno(r, "Failed to open %s: %m", "/proc/self/mountinfo");
         }
 
         /* First round, establish all mounts we need */

src/core/swap.c

@@ -1317,7 +1317,7 @@ static void swap_enumerate(Manager *m) {
                         if (errno == ENOENT)
                                 log_debug_errno(errno, "Not swap enabled, skipping enumeration.");
                         else
-                                log_warning_errno(errno, "Failed to open /proc/swaps, ignoring: %m");
+                                log_warning_errno(errno, "Failed to open %s, ignoring: %m", "/proc/swaps");
 
                         return;
                 }