treewide: another round of simplifications

Using the same scripts as in f647962d64e "treewide: yet more log_*_errno
+ return simplifications".

8 files changed, 50 insertions, 100 deletions

diff --git a/src/shared/ask-password-api.c b/src/shared/ask-password-api.c
index 41049d79b..d6589a67f 100644
--- a/src/shared/ask-password-api.c
+++ b/src/shared/ask-password-api.c
@@ -258,10 +258,8 @@ static int create_socket(char **name) {
         assert(name);
 
         fd = socket(AF_UNIX, SOCK_DGRAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0);
-        if (fd < 0) {
-                log_error_errno(errno, "socket() failed: %m");
-                return -errno;
-        }
+        if (fd < 0)
+                return log_error_errno(errno, "socket() failed: %m");
 
         snprintf(sa.un.sun_path, sizeof(sa.un.sun_path)-1, "/run/systemd/ask-password/sck.%" PRIx64, random_u64());
 
diff --git a/src/shared/base-filesystem.c b/src/shared/base-filesystem.c
index b1f1f4190..73907c635 100644
--- a/src/shared/base-filesystem.c
+++ b/src/shared/base-filesystem.c
@@ -58,10 +58,8 @@ int base_filesystem_create(const char *root) {
         int r;
 
         fd = open(root, O_RDONLY|O_NONBLOCK|O_DIRECTORY|O_CLOEXEC|O_NOFOLLOW);
-        if (fd < 0) {
-                log_error_errno(errno, "Failed to open root file system: %m");
-                return -errno;
-        }
+        if (fd < 0)
+                return log_error_errno(errno, "Failed to open root file system: %m");
 
         for (i = 0; i < ELEMENTSOF(table); i ++) {
                 if (faccessat(fd, table[i].dir, F_OK, AT_SYMLINK_NOFOLLOW) >= 0)
@@ -95,19 +93,15 @@ int base_filesystem_create(const char *root) {
                                 continue;
 
                         r = symlinkat(target, fd, table[i].dir);
-                        if (r < 0 && errno != EEXIST) {
-                                log_error_errno(errno, "Failed to create symlink at %s/%s: %m", root, table[i].dir);
-                                return -errno;
-                        }
+                        if (r < 0 && errno != EEXIST)
+                                return log_error_errno(errno, "Failed to create symlink at %s/%s: %m", root, table[i].dir);
                         continue;
                 }
 
                 RUN_WITH_UMASK(0000)
                         r = mkdirat(fd, table[i].dir, table[i].mode);
-                if (r < 0 && errno != EEXIST) {
-                        log_error_errno(errno, "Failed to create directory at %s/%s: %m", root, table[i].dir);
-                        return -errno;
-                }
+                if (r < 0 && errno != EEXIST)
+                        return log_error_errno(errno, "Failed to create directory at %s/%s: %m", root, table[i].dir);
         }
 
         return 0;
diff --git a/src/shared/capability.c b/src/shared/capability.c
index e2e0dd1a3..5d156ab3c 100644
--- a/src/shared/capability.c
+++ b/src/shared/capability.c
@@ -227,31 +227,21 @@ int drop_privileges(uid_t uid, gid_t gid, uint64_t keep_capabilities) {
          * binary has the capability configured in the file system,
          * which we want to avoid. */
 
-        if (setresgid(gid, gid, gid) < 0) {
-                log_error_errno(errno, "Failed to change group ID: %m");
-                return -errno;
-        }
+        if (setresgid(gid, gid, gid) < 0)
+                return log_error_errno(errno, "Failed to change group ID: %m");
 
-        if (setgroups(0, NULL) < 0) {
-                log_error_errno(errno, "Failed to drop auxiliary groups list: %m");
-                return -errno;
-        }
+        if (setgroups(0, NULL) < 0)
+                return log_error_errno(errno, "Failed to drop auxiliary groups list: %m");
 
-        if (prctl(PR_SET_KEEPCAPS, 1) < 0) {
-                log_error_errno(errno, "Failed to enable keep capabilities flag: %m");
-                return -errno;
-        }
+        if (prctl(PR_SET_KEEPCAPS, 1) < 0)
+                return log_error_errno(errno, "Failed to enable keep capabilities flag: %m");
 
         r = setresuid(uid, uid, uid);
-        if (r < 0) {
-                log_error_errno(errno, "Failed to change user ID: %m");
-                return -errno;
-        }
+        if (r < 0)
+                return log_error_errno(errno, "Failed to change user ID: %m");
 
-        if (prctl(PR_SET_KEEPCAPS, 0) < 0) {
-                log_error_errno(errno, "Failed to disable keep capabilities flag: %m");
-                return -errno;
-        }
+        if (prctl(PR_SET_KEEPCAPS, 0) < 0)
+                return log_error_errno(errno, "Failed to disable keep capabilities flag: %m");
 
         r = capability_bounding_set_drop(~keep_capabilities, true);
         if (r < 0)
@@ -276,10 +266,8 @@ int drop_privileges(uid_t uid, gid_t gid, uint64_t keep_capabilities) {
                 }
         }
 
-        if (cap_set_proc(d) < 0) {
-                log_error_errno(errno, "Failed to increase capabilities: %m");
-                return -errno;
-        }
+        if (cap_set_proc(d) < 0)
+                return log_error_errno(errno, "Failed to increase capabilities: %m");
 
         return 0;
 }
diff --git a/src/shared/generator.c b/src/shared/generator.c
index 01229d8d7..465e5f6cc 100644
--- a/src/shared/generator.c
+++ b/src/shared/generator.c
@@ -64,10 +64,8 @@ int generator_write_fsck_deps(
                 lnk = strappenda(dest, "/" SPECIAL_LOCAL_FS_TARGET ".wants/systemd-fsck-root.service");
 
                 mkdir_parents(lnk, 0755);
-                if (symlink(SYSTEM_DATA_UNIT_PATH "/systemd-fsck-root.service", lnk) < 0) {
-                        log_error_errno(errno, "Failed to create symlink %s: %m", lnk);
-                        return -errno;
-                }
+                if (symlink(SYSTEM_DATA_UNIT_PATH "/systemd-fsck-root.service", lnk) < 0)
+                        return log_error_errno(errno, "Failed to create symlink %s: %m", lnk);
 
         } else {
                 _cleanup_free_ char *fsck = NULL;
diff --git a/src/shared/pager.c b/src/shared/pager.c
index 286394072..a9f2b7e4f 100644
--- a/src/shared/pager.c
+++ b/src/shared/pager.c
@@ -67,10 +67,8 @@ int pager_open(bool jump_to_end) {
          * pager so that we get the value from the actual tty */
         columns();
 
-        if (pipe(fd) < 0) {
-                log_error_errno(errno, "Failed to create pager pipe: %m");
-                return -errno;
-        }
+        if (pipe(fd) < 0)
+                return log_error_errno(errno, "Failed to create pager pipe: %m");
 
         parent_pid = getpid();
 
@@ -126,10 +124,8 @@ int pager_open(bool jump_to_end) {
         }
 
         /* Return in the parent */
-        if (dup2(fd[1], STDOUT_FILENO) < 0) {
-                log_error_errno(errno, "Failed to duplicate pager pipe: %m");
-                return -errno;
-        }
+        if (dup2(fd[1], STDOUT_FILENO) < 0)
+                return log_error_errno(errno, "Failed to duplicate pager pipe: %m");
 
         safe_close_pair(fd);
         return 1;
@@ -176,10 +172,8 @@ int show_man_page(const char *desc, bool null_stdio) {
                 args[1] = desc;
 
         pid = fork();
-        if (pid < 0) {
-                log_error_errno(errno, "Failed to fork: %m");
-                return -errno;
-        }
+        if (pid < 0)
+                return log_error_errno(errno, "Failed to fork: %m");
 
         if (pid == 0) {
                 /* Child */
diff --git a/src/shared/socket-util.c b/src/shared/socket-util.c
index b5b001a6f..c6f64876b 100644
--- a/src/shared/socket-util.c
+++ b/src/shared/socket-util.c
@@ -657,10 +657,8 @@ int getnameinfo_pretty(int fd, char **ret) {
         assert(fd >= 0);
         assert(ret);
 
-        if (getsockname(fd, &sa.sa, &salen) < 0) {
-                log_error_errno(errno, "getsockname(%d) failed: %m", fd);
-                return -errno;
-        }
+        if (getsockname(fd, &sa.sa, &salen) < 0)
+                return log_error_errno(errno, "getsockname(%d) failed: %m", fd);
 
         return socknameinfo_pretty(&sa, salen, ret);
 }
diff --git a/src/shared/switch-root.c b/src/shared/switch-root.c
index c5b635d17..ca3875628 100644
--- a/src/shared/switch-root.c
+++ b/src/shared/switch-root.c
@@ -56,10 +56,8 @@ int switch_root(const char *new_root, const char *oldroot, bool detach_oldroot,
 
         old_root_remove = in_initrd();
 
-        if (stat(new_root, &new_root_stat) < 0) {
-                log_error_errno(errno, "Failed to stat directory %s: %m", new_root);
-                return -errno;
-        }
+        if (stat(new_root, &new_root_stat) < 0)
+                return log_error_errno(errno, "Failed to stat directory %s: %m", new_root);
 
         /* Work-around for kernel design: the kernel refuses switching
          * root if any file systems are mounted MS_SHARED. Hence
@@ -109,10 +107,8 @@ int switch_root(const char *new_root, const char *oldroot, bool detach_oldroot,
          * switch_root() nevertheless. */
         (void) base_filesystem_create(new_root);
 
-        if (chdir(new_root) < 0) {
-                log_error_errno(errno, "Failed to change directory to %s: %m", new_root);
-                return -errno;
-        }
+        if (chdir(new_root) < 0)
+                return log_error_errno(errno, "Failed to change directory to %s: %m", new_root);
 
         if (old_root_remove) {
                 old_root_fd = open("/", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_NOCTTY|O_DIRECTORY);
@@ -132,20 +128,14 @@ int switch_root(const char *new_root, const char *oldroot, bool detach_oldroot,
                                   oldroot,
                                   errno == ENOENT ? "ignoring" : "leaving it around");
 
-        } else if (mount(new_root, "/", NULL, MS_MOVE, NULL) < 0) {
-                log_error_errno(errno, "Failed to mount moving %s to /: %m", new_root);
-                return -errno;
-        }
+        } else if (mount(new_root, "/", NULL, MS_MOVE, NULL) < 0)
+                return log_error_errno(errno, "Failed to mount moving %s to /: %m", new_root);
 
-        if (chroot(".") < 0) {
-                log_error_errno(errno, "Failed to change root: %m");
-                return -errno;
-        }
+        if (chroot(".") < 0)
+                return log_error_errno(errno, "Failed to change root: %m");
 
-        if (chdir("/") < 0) {
-                log_error_errno(errno, "Failed to change directory: %m");
-                return -errno;
-        }
+        if (chdir("/") < 0)
+                return log_error_errno(errno, "Failed to change directory: %m");
 
         if (old_root_fd >= 0) {
                 struct stat rb;
diff --git a/src/shared/watchdog.c b/src/shared/watchdog.c
index 386751418..2fe4eb81c 100644
--- a/src/shared/watchdog.c
+++ b/src/shared/watchdog.c
@@ -44,36 +44,28 @@ static int update_timeout(void) {
 
                 flags = WDIOS_DISABLECARD;
                 r = ioctl(watchdog_fd, WDIOC_SETOPTIONS, &flags);
-                if (r < 0) {
-                        log_warning_errno(errno, "Failed to disable hardware watchdog: %m");
-                        return -errno;
-                }
+                if (r < 0)
+                        return log_warning_errno(errno, "Failed to disable hardware watchdog: %m");
         } else {
                 int sec, flags;
                 char buf[FORMAT_TIMESPAN_MAX];
 
                 sec = (int) ((watchdog_timeout + USEC_PER_SEC - 1) / USEC_PER_SEC);
                 r = ioctl(watchdog_fd, WDIOC_SETTIMEOUT, &sec);
-                if (r < 0) {
-                        log_warning_errno(errno, "Failed to set timeout to %is: %m", sec);
-                        return -errno;
-                }
+                if (r < 0)
+                        return log_warning_errno(errno, "Failed to set timeout to %is: %m", sec);
 
                 watchdog_timeout = (usec_t) sec * USEC_PER_SEC;
                 log_info("Set hardware watchdog to %s.", format_timespan(buf, sizeof(buf), watchdog_timeout, 0));
 
                 flags = WDIOS_ENABLECARD;
                 r = ioctl(watchdog_fd, WDIOC_SETOPTIONS, &flags);
-                if (r < 0) {
-                        log_warning_errno(errno, "Failed to enable hardware watchdog: %m");
-                        return -errno;
-                }
+                if (r < 0)
+                        return log_warning_errno(errno, "Failed to enable hardware watchdog: %m");
 
                 r = ioctl(watchdog_fd, WDIOC_KEEPALIVE, 0);
-                if (r < 0) {
-                        log_warning_errno(errno, "Failed to ping hardware watchdog: %m");
-                        return -errno;
-                }
+                if (r < 0)
+                        return log_warning_errno(errno, "Failed to ping hardware watchdog: %m");
         }
 
         return 0;
@@ -127,10 +119,8 @@ int watchdog_ping(void) {
         }
 
         r = ioctl(watchdog_fd, WDIOC_KEEPALIVE, 0);
-        if (r < 0) {
-                log_warning_errno(errno, "Failed to ping hardware watchdog: %m");
-                return -errno;
-        }
+        if (r < 0)
+                return log_warning_errno(errno, "Failed to ping hardware watchdog: %m");
 
         return 0;
 }