treewide: use log_*_errno whenever %m is in the format string

If the format string contains %m, clearly errno must have a meaningful
value, so we might as well use log_*_errno to have ERRNO= logged.

Using:
find . -name '*.[ch]' | xargs sed -r -i -e \
's/log_(debug|info|notice|warning|error|emergency)\((".*%m.*")/log_\1_errno(errno, \2/'

Plus some whitespace, linewrap, and indent adjustments.

5 files changed, 75 insertions, 61 deletions

diff --git a/src/libsystemd-terminal/evcat.c b/src/libsystemd-terminal/evcat.c
index b77f4b0f51..afb61c71a4 100644
--- a/src/libsystemd-terminal/evcat.c
+++ b/src/libsystemd-terminal/evcat.c
@@ -359,13 +359,13 @@ static int evcat_sysview_fn(sysview_context *c, void *userdata, sysview_event *e
 
                 r = ioctl(1, KDSKBMODE, K_UNICODE);
                 if (r < 0) {
-                        log_error("Cannot set K_UNICODE on stdout: %m");
+                        log_error_errno(errno, "Cannot set K_UNICODE on stdout: %m");
                         return -errno;
                 }
 
                 r = ioctl(1, KDSETMODE, KD_TEXT);
                 if (r < 0) {
-                        log_error("Cannot set KD_TEXT on stdout: %m");
+                        log_error_errno(errno, "Cannot set KD_TEXT on stdout: %m");
                         return -errno;
                 }
 
diff --git a/src/libsystemd-terminal/grdev-drm.c b/src/libsystemd-terminal/grdev-drm.c
index 2d678e8acf..2df63537f0 100644
--- a/src/libsystemd-terminal/grdev-drm.c
+++ b/src/libsystemd-terminal/grdev-drm.c
@@ -468,9 +468,11 @@ static int grdrm_plane_resync(grdrm_plane *plane) {
                         if (r == -ENOENT) {
                                 card->async_hotplug = true;
                                 r = 0;
-                                log_debug("grdrm: %s: plane %u removed during resync", card->base.name, plane->object.id);
+                                log_debug("grdrm: %s: plane %u removed during resync",
+                                          card->base.name, plane->object.id);
                         } else {
-                                log_debug("grdrm: %s: cannot retrieve plane %u: %m", card->base.name, plane->object.id);
+                                log_debug_errno(errno, "grdrm: %s: cannot retrieve plane %u: %m",
+                                                card->base.name, plane->object.id);
                         }
 
                         return r;
@@ -625,9 +627,11 @@ static int grdrm_connector_resync(grdrm_connector *connector) {
                         if (r == -ENOENT) {
                                 card->async_hotplug = true;
                                 r = 0;
-                                log_debug("grdrm: %s: connector %u removed during resync", card->base.name, connector->object.id);
+                                log_debug("grdrm: %s: connector %u removed during resync",
+                                          card->base.name, connector->object.id);
                         } else {
-                                log_debug("grdrm: %s: cannot retrieve connector %u: %m", card->base.name, connector->object.id);
+                                log_debug_errno(errno, "grdrm: %s: cannot retrieve connector %u: %m",
+                                                card->base.name, connector->object.id);
                         }
 
                         return r;
@@ -783,9 +787,11 @@ static int grdrm_encoder_resync(grdrm_encoder *encoder) {
                 if (r == -ENOENT) {
                         card->async_hotplug = true;
                         r = 0;
-                        log_debug("grdrm: %s: encoder %u removed during resync", card->base.name, encoder->object.id);
+                        log_debug("grdrm: %s: encoder %u removed during resync",
+                                  card->base.name, encoder->object.id);
                 } else {
-                        log_debug("grdrm: %s: cannot retrieve encoder %u: %m", card->base.name, encoder->object.id);
+                        log_debug_errno(errno, "grdrm: %s: cannot retrieve encoder %u: %m",
+                                        card->base.name, encoder->object.id);
                 }
 
                 return r;
@@ -916,9 +922,11 @@ static int grdrm_crtc_resync(grdrm_crtc *crtc) {
                 if (r == -ENOENT) {
                         card->async_hotplug = true;
                         r = 0;
-                        log_debug("grdrm: %s: crtc %u removed during resync", card->base.name, crtc->object.id);
+                        log_debug("grdrm: %s: crtc %u removed during resync",
+                                  card->base.name, crtc->object.id);
                 } else {
-                        log_debug("grdrm: %s: cannot retrieve crtc %u: %m", card->base.name, crtc->object.id);
+                        log_debug_errno(errno, "grdrm: %s: cannot retrieve crtc %u: %m",
+                                        card->base.name, crtc->object.id);
                 }
 
                 return r;
@@ -1119,8 +1127,8 @@ static void grdrm_crtc_commit_deep(grdrm_crtc *crtc, grdev_fb *basefb) {
         r = ioctl(card->fd, DRM_IOCTL_MODE_SETCRTC, &set_crtc);
         if (r < 0) {
                 r = -errno;
-                log_debug("grdrm: %s: cannot set crtc %" PRIu32 ": %m",
-                          card->base.name, crtc->object.id);
+                log_debug_errno(errno, "grdrm: %s: cannot set crtc %" PRIu32 ": %m",
+                                card->base.name, crtc->object.id);
 
                 grdrm_card_async(card, r);
                 return;
@@ -1188,8 +1196,8 @@ static int grdrm_crtc_commit_flip(grdrm_crtc *crtc, grdev_fb *basefb) {
                  * possible to see whether cards support page-flipping, so
                  * avoid logging on each frame. */
                 if (r != -EINVAL)
-                        log_debug("grdrm: %s: cannot schedule page-flip on crtc %" PRIu32 ": %m",
-                                  card->base.name, crtc->object.id);
+                        log_debug_errno(errno, "grdrm: %s: cannot schedule page-flip on crtc %" PRIu32 ": %m",
+                                        card->base.name, crtc->object.id);
 
                 if (grdrm_card_async(card, r))
                         return r;
@@ -1241,8 +1249,8 @@ static void grdrm_crtc_commit(grdrm_crtc *crtc) {
                         r = ioctl(card->fd, DRM_IOCTL_MODE_SETCRTC, &set_crtc);
                         if (r < 0) {
                                 r = -errno;
-                                log_debug("grdrm: %s: cannot shutdown crtc %" PRIu32 ": %m",
-                                          card->base.name, crtc->object.id);
+                                log_debug_errno(errno, "grdrm: %s: cannot shutdown crtc %" PRIu32 ": %m",
+                                                card->base.name, crtc->object.id);
 
                                 grdrm_card_async(card, r);
                                 return;
@@ -1298,8 +1306,8 @@ static void grdrm_crtc_restore(grdrm_crtc *crtc) {
         r = ioctl(card->fd, DRM_IOCTL_MODE_SETCRTC, &set_crtc);
         if (r < 0) {
                 r = -errno;
-                log_debug("grdrm: %s: cannot restore crtc %" PRIu32 ": %m",
-                          card->base.name, crtc->object.id);
+                log_debug_errno(errno, "grdrm: %s: cannot restore crtc %" PRIu32 ": %m",
+                                card->base.name, crtc->object.id);
 
                 grdrm_card_async(card, r);
                 return;
@@ -1394,8 +1402,8 @@ static int grdrm_fb_new(grdrm_fb **out, grdrm_card *card, const struct drm_mode_
         r = ioctl(card->fd, DRM_IOCTL_MODE_CREATE_DUMB, &create_dumb);
         if (r < 0) {
                 r = negative_errno();
-                log_debug("grdrm: %s: cannot create dumb buffer %" PRIu32 "x%" PRIu32": %m",
-                          card->base.name, fb->base.width, fb->base.height);
+                log_debug_errno(errno, "grdrm: %s: cannot create dumb buffer %" PRIu32 "x%" PRIu32": %m",
+                                card->base.name, fb->base.width, fb->base.height);
                 return r;
         }
 
@@ -1408,16 +1416,16 @@ static int grdrm_fb_new(grdrm_fb **out, grdrm_card *card, const struct drm_mode_
         r = ioctl(card->fd, DRM_IOCTL_MODE_MAP_DUMB, &map_dumb);
         if (r < 0) {
                 r = negative_errno();
-                log_debug("grdrm: %s: cannot map dumb buffer %" PRIu32 "x%" PRIu32": %m",
-                          card->base.name, fb->base.width, fb->base.height);
+                log_debug_errno(errno, "grdrm: %s: cannot map dumb buffer %" PRIu32 "x%" PRIu32": %m",
+                                card->base.name, fb->base.width, fb->base.height);
                 return r;
         }
 
         fb->base.maps[0] = mmap(0, fb->sizes[0], PROT_WRITE, MAP_SHARED, card->fd, map_dumb.offset);
         if (fb->base.maps[0] == MAP_FAILED) {
                 r = negative_errno();
-                log_debug("grdrm: %s: cannot memory-map dumb buffer %" PRIu32 "x%" PRIu32": %m",
-                          card->base.name, fb->base.width, fb->base.height);
+                log_debug_errno(errno, "grdrm: %s: cannot memory-map dumb buffer %" PRIu32 "x%" PRIu32": %m",
+                                card->base.name, fb->base.width, fb->base.height);
                 return r;
         }
 
@@ -1434,8 +1442,8 @@ static int grdrm_fb_new(grdrm_fb **out, grdrm_card *card, const struct drm_mode_
         r = ioctl(card->fd, DRM_IOCTL_MODE_ADDFB2, &add_fb);
         if (r < 0) {
                 r = negative_errno();
-                log_debug("grdrm: %s: cannot add framebuffer %" PRIu32 "x%" PRIu32": %m",
-                          card->base.name, fb->base.width, fb->base.height);
+                log_debug_errno(errno, "grdrm: %s: cannot add framebuffer %" PRIu32 "x%" PRIu32": %m",
+                                card->base.name, fb->base.width, fb->base.height);
                 return r;
         }
 
@@ -1461,8 +1469,8 @@ grdrm_fb *grdrm_fb_free(grdrm_fb *fb) {
         if (fb->id > 0 && fb->card->fd >= 0) {
                 r = ioctl(fb->card->fd, DRM_IOCTL_MODE_RMFB, fb->id);
                 if (r < 0)
-                        log_debug("grdrm: %s: cannot delete framebuffer %" PRIu32 ": %m",
-                                  fb->card->base.name, fb->id);
+                        log_debug_errno(errno, "grdrm: %s: cannot delete framebuffer %" PRIu32 ": %m",
+                                        fb->card->base.name, fb->id);
         }
 
         for (i = 0; i < ELEMENTSOF(fb->handles); ++i) {
@@ -1475,8 +1483,8 @@ grdrm_fb *grdrm_fb_free(grdrm_fb *fb) {
                         destroy_dumb.handle = fb->handles[i];
                         r = ioctl(fb->card->fd, DRM_IOCTL_MODE_DESTROY_DUMB, &destroy_dumb);
                         if (r < 0)
-                                log_debug("grdrm: %s: cannot destroy dumb-buffer %" PRIu32 ": %m",
-                                          fb->card->base.name, fb->handles[i]);
+                                log_debug_errno(errno, "grdrm: %s: cannot destroy dumb-buffer %" PRIu32 ": %m",
+                                                fb->card->base.name, fb->handles[i]);
                 }
         }
 
@@ -1777,7 +1785,8 @@ static int grdrm_card_resync(grdrm_card *card) {
                 r = ioctl(card->fd, DRM_IOCTL_MODE_GETRESOURCES, &res);
                 if (r < 0) {
                         r = -errno;
-                        log_debug("grdrm: %s: cannot retrieve drm resources: %m", card->base.name);
+                        log_debug_errno(errno, "grdrm: %s: cannot retrieve drm resources: %m",
+                                        card->base.name);
                         return r;
                 }
 
@@ -1788,7 +1797,8 @@ static int grdrm_card_resync(grdrm_card *card) {
                 r = ioctl(card->fd, DRM_IOCTL_MODE_GETPLANERESOURCES, &pres);
                 if (r < 0) {
                         r = -errno;
-                        log_debug("grdrm: %s: cannot retrieve drm plane-resources: %m", card->base.name);
+                        log_debug_errno(errno, "grdrm: %s: cannot retrieve drm plane-resources: %m",
+                                        card->base.name);
                         return r;
                 }
 
@@ -1799,7 +1809,8 @@ static int grdrm_card_resync(grdrm_card *card) {
 
                         n = ALIGN_POWER2(max);
                         if (!n || n > UINT16_MAX) {
-                                log_debug("grdrm: %s: excessive DRM resource limit: %" PRIu32, card->base.name, max);
+                                log_debug("grdrm: %s: excessive DRM resource limit: %" PRIu32,
+                                          card->base.name, max);
                                 return -ERANGE;
                         }
 
@@ -2228,7 +2239,8 @@ static int grdrm_card_io_fn(sd_event_source *s, int fd, uint32_t revents, void *
                         if (errno == EAGAIN || errno == EINTR)
                                 return 0;
 
-                        log_debug("grdrm: %s/%s: read error: %m", card->base.session->name, card->base.name);
+                        log_debug_errno(errno, "grdrm: %s/%s: read error: %m",
+                                        card->base.session->name, card->base.name);
                         grdrm_card_close(card);
                         return 0;
                 }
@@ -2237,7 +2249,8 @@ static int grdrm_card_io_fn(sd_event_source *s, int fd, uint32_t revents, void *
                         event = (void*)buf;
 
                         if (len < sizeof(*event) || len < event->length) {
-                                log_debug("grdrm: %s/%s: truncated event", card->base.session->name, card->base.name);
+                                log_debug("grdrm: %s/%s: truncated event",
+                                          card->base.session->name, card->base.name);
                                 break;
                         }
 
@@ -2245,7 +2258,8 @@ static int grdrm_card_io_fn(sd_event_source *s, int fd, uint32_t revents, void *
                         case DRM_EVENT_FLIP_COMPLETE:
                                 vblank = (void*)event;
                                 if (event->length < sizeof(*vblank)) {
-                                        log_debug("grdrm: %s/%s: truncated vblank event", card->base.session->name, card->base.name);
+                                        log_debug("grdrm: %s/%s: truncated vblank event",
+                                                  card->base.session->name, card->base.name);
                                         break;
                                 }
 
@@ -2498,8 +2512,8 @@ static void unmanaged_card_enable(grdev_card *basecard) {
                 fd = open(cu->devnode, O_RDWR | O_CLOEXEC | O_NOCTTY | O_NONBLOCK);
                 if (fd < 0) {
                         /* not fatal; simply ignore the device */
-                        log_debug("grdrm: %s/%s: cannot open node %s: %m",
-                                  basecard->session->name, basecard->name, cu->devnode);
+                        log_debug_errno(errno, "grdrm: %s/%s: cannot open node %s: %m",
+                                        basecard->session->name, basecard->name, cu->devnode);
                         return;
                 }
 
@@ -2515,8 +2529,8 @@ static void unmanaged_card_enable(grdev_card *basecard) {
 
         r = ioctl(cu->card.fd, DRM_IOCTL_SET_MASTER, 0);
         if (r < 0) {
-                log_debug("grdrm: %s/%s: cannot acquire DRM-Master: %m",
-                          basecard->session->name, basecard->name);
+                log_debug_errno(errno, "grdrm: %s/%s: cannot acquire DRM-Master: %m",
+                                basecard->session->name, basecard->name);
                 return;
         }
 
@@ -2566,8 +2580,8 @@ static int unmanaged_card_new(grdev_card **out, grdev_session *session, struct u
         fd = open(cu->devnode, O_RDWR | O_CLOEXEC | O_NOCTTY | O_NONBLOCK);
         if (fd < 0) {
                 /* not fatal; allow uaccess based control on activation */
-                log_debug("grdrm: %s/%s: cannot open node %s: %m",
-                          basecard->session->name, basecard->name, cu->devnode);
+                log_debug_errno(errno, "grdrm: %s/%s: cannot open node %s: %m",
+                                basecard->session->name, basecard->name, cu->devnode);
         } else {
                 /* We might get DRM-Master implicitly on open(); drop it immediately
                  * so we acquire it only once we're actually enabled. We don't
@@ -2575,8 +2589,8 @@ static int unmanaged_card_new(grdev_card **out, grdev_session *session, struct u
                  * weird errors, anyway. */
                 r = ioctl(fd, DRM_IOCTL_DROP_MASTER, 0);
                 if (r < 0 && errno != EACCES && errno != EINVAL)
-                        log_debug("grdrm: %s/%s: cannot drop DRM-Master: %m",
-                                  basecard->session->name, basecard->name);
+                        log_debug_errno(errno, "grdrm: %s/%s: cannot drop DRM-Master: %m",
+                                        basecard->session->name, basecard->name);
 
                 r = grdrm_card_open(&cu->card, fd);
                 if (r < 0)
@@ -2771,8 +2785,8 @@ static int managed_card_resume_device_fn(sd_bus *bus,
                  * and our code works fine this way. */
                 fd = fcntl(fd, F_DUPFD_CLOEXEC, 3);
                 if (fd < 0) {
-                        log_debug("grdrm: %s/%s: cannot duplicate fd: %m",
-                                  session->name, cm->card.base.name);
+                        log_debug_errno(errno, "grdrm: %s/%s: cannot duplicate fd: %m",
+                                        session->name, cm->card.base.name);
                         return 0;
                 }
 
@@ -2863,8 +2877,8 @@ static int managed_card_take_device_fn(sd_bus *bus,
 
         fd = fcntl(fd, F_DUPFD_CLOEXEC, 3);
         if (fd < 0) {
-                log_debug("grdrm: %s/%s: cannot duplicate fd: %m",
-                          session->name, cm->card.base.name);
+                log_debug_errno(errno, "grdrm: %s/%s: cannot duplicate fd: %m",
+                                session->name, cm->card.base.name);
                 return 0;
         }
 
diff --git a/src/libsystemd-terminal/idev-evdev.c b/src/libsystemd-terminal/idev-evdev.c
index b3e86bfb19..dfbb2d197f 100644
--- a/src/libsystemd-terminal/idev-evdev.c
+++ b/src/libsystemd-terminal/idev-evdev.c
@@ -426,15 +426,15 @@ static void unmanaged_evdev_resume(idev_element *e) {
                 fd = open(eu->devnode, O_RDWR | O_CLOEXEC | O_NOCTTY | O_NONBLOCK);
                 if (fd < 0) {
                         if (errno != EACCES && errno != EPERM) {
-                                log_debug("idev-evdev: %s/%s: cannot open node %s: %m",
-                                          e->session->name, e->name, eu->devnode);
+                                log_debug_errno(errno, "idev-evdev: %s/%s: cannot open node %s: %m",
+                                                e->session->name, e->name, eu->devnode);
                                 return;
                         }
 
                         fd = open(eu->devnode, O_RDONLY | O_CLOEXEC | O_NOCTTY | O_NONBLOCK);
                         if (fd < 0) {
-                                log_debug("idev-evdev: %s/%s: cannot open node %s: %m",
-                                          e->session->name, e->name, eu->devnode);
+                                log_debug_errno(errno, "idev-evdev: %s/%s: cannot open node %s: %m",
+                                                e->session->name, e->name, eu->devnode);
                                 return;
                         }
 
@@ -565,7 +565,7 @@ static int managed_evdev_take_device_fn(sd_bus *bus,
 
         fd = fcntl(fd, F_DUPFD_CLOEXEC, 3);
         if (fd < 0) {
-                log_debug("idev-evdev: %s/%s: cannot duplicate evdev fd: %m", s->name, e->name);
+                log_debug_errno(errno, "idev-evdev: %s/%s: cannot duplicate evdev fd: %m", s->name, e->name);
                 return 0;
         }
 
@@ -698,8 +698,8 @@ static void managed_evdev_resume(idev_element *e, int fd) {
 
         fd = fcntl(fd, F_DUPFD_CLOEXEC, 3);
         if (fd < 0) {
-                log_debug("idev-evdev: %s/%s: cannot duplicate evdev fd: %m",
-                          s->name, e->name);
+                log_debug_errno(errno, "idev-evdev: %s/%s: cannot duplicate evdev fd: %m",
+                                s->name, e->name);
                 return;
         }
 
diff --git a/src/libsystemd-terminal/modeset.c b/src/libsystemd-terminal/modeset.c
index 0b6499b18f..f7bcbb2914 100644
--- a/src/libsystemd-terminal/modeset.c
+++ b/src/libsystemd-terminal/modeset.c
@@ -355,7 +355,7 @@ static int modeset_sysview_fn(sysview_context *c, void *userdata, sysview_event
 
                 r = ioctl(1, KDSKBMODE, K_UNICODE);
                 if (r < 0) {
-                        log_error("Cannot set K_UNICODE on stdout: %m");
+                        log_error_errno(errno, "Cannot set K_UNICODE on stdout: %m");
                         return -errno;
                 }
 
diff --git a/src/libsystemd-terminal/subterm.c b/src/libsystemd-terminal/subterm.c
index 920b661af4..f2651b24ac 100644
--- a/src/libsystemd-terminal/subterm.c
+++ b/src/libsystemd-terminal/subterm.c
@@ -103,7 +103,7 @@ static int output_winch(Output *o) {
 
         r = ioctl(o->fd, TIOCGWINSZ, &wsz);
         if (r < 0) {
-                log_error("error: cannot read window-size: %m");
+                log_error_errno(errno, "error: cannot read window-size: %m");
                 return -errno;
         }
 
@@ -707,7 +707,7 @@ static int terminal_io_fn(sd_event_source *source, int fd, uint32_t revents, voi
                 if (errno == EAGAIN || errno == EINTR)
                         return 0;
 
-                log_error("error: cannot read from TTY (%d): %m", -errno);
+                log_error_errno(errno, "error: cannot read from TTY (%d): %m", -errno);
                 return -errno;
         }
 
@@ -823,13 +823,13 @@ static int terminal_new(Terminal **out, int in_fd, int out_fd) {
 
         r = tcgetattr(in_fd, &in_attr);
         if (r < 0) {
-                log_error("error: tcgetattr() (%d): %m", -errno);
+                log_error_errno(errno, "error: tcgetattr() (%d): %m", -errno);
                 return -errno;
         }
 
         r = tcgetattr(out_fd, &out_attr);
         if (r < 0) {
-                log_error("error: tcgetattr() (%d): %m", -errno);
+                log_error_errno(errno, "error: tcgetattr() (%d): %m", -errno);
                 return -errno;
         }
 
@@ -955,7 +955,7 @@ static int terminal_run(Terminal *t) {
                 setenv("COLORTERM", "systemd-subterm", 1);
 
                 execve(argv[0], argv, environ);
-                log_error("error: cannot exec %s (%d): %m", argv[0], -errno);
+                log_error_errno(errno, "error: cannot exec %s (%d): %m", argv[0], -errno);
                 _exit(1);
         }