treewide: auto-convert the simple cases to log_*_errno()

As a followup to 086891e5c1 "log: add an "error" parameter to all
low-level logging calls and intrdouce log_error_errno() as log calls
that take error numbers", use sed to convert the simple cases to use
the new macros:

find . -name '*.[ch]' | xargs sed -r -i -e \
's/log_(debug|info|notice|warning|error|emergency)\("(.*)%s"(.*), strerror\(-([a-zA-Z_]+)\)\);/log_\1_errno(-\4, "\2%m"\3);/'

Multi-line log_*() invocations are not covered.
And we also should add log_unit_*_errno().

1 files changed, 4 insertions, 4 deletions

diff --git a/src/backlight/backlight.c b/src/backlight/backlight.c
index 0a2bac6f16..ab05a7d1a7 100644
--- a/src/backlight/backlight.c
+++ b/src/backlight/backlight.c
@@ -211,7 +211,7 @@ static unsigned get_max_brightness(struct udev_device *device) {
 
         r = safe_atou(max_brightness_str, &max_brightness);
         if (r < 0) {
-                log_warning("Failed to parse 'max_brightness' \"%s\": %s", max_brightness_str, strerror(-r));
+                log_warning_errno(-r, "Failed to parse 'max_brightness' \"%s\": %m", max_brightness_str);
                 return 0;
         }
 
@@ -235,7 +235,7 @@ static void clamp_brightness(struct udev_device *device, char **value, unsigned
 
         r = safe_atou(*value, &brightness);
         if (r < 0) {
-                log_warning("Failed to parse brightness \"%s\": %s", *value, strerror(-r));
+                log_warning_errno(-r, "Failed to parse brightness \"%s\": %m", *value);
                 return;
         }
 
@@ -387,7 +387,7 @@ int main(int argc, char *argv[]) {
                         if (r == -ENOENT)
                                 return EXIT_SUCCESS;
 
-                        log_error("Failed to read %s: %s", saved, strerror(-r));
+                        log_error_errno(-r, "Failed to read %s: %m", saved);
                         return EXIT_FAILURE;
                 }
 
@@ -416,7 +416,7 @@ int main(int argc, char *argv[]) {
 
                 r = write_string_file(saved, value);
                 if (r < 0) {
-                        log_error("Failed to write %s: %s", saved, strerror(-r));
+                        log_error_errno(-r, "Failed to write %s: %m", saved);
                         return EXIT_FAILURE;
                 }