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backlight: unify error messages

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This commit is contained in:
Zbigniew Jędrzejewski-Szmek 2014-04-07 20:57:22 -04:00
parent d576127429
commit 938d2699d2
1 changed files with 19 additions and 10 deletions
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29
src/backlight/backlight.c
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@ -24,6 +24,7 @@
#include "fileio.h"
#include "libudev.h"
#include "udev-util.h"
#include "def.h"
static struct udev_device *find_pci_or_platform_parent(struct udev_device *device) {
struct udev_device *parent;
@ -50,7 +51,7 @@ static struct udev_device *find_pci_or_platform_parent(struct udev_device *devic
if (!c)
return NULL;
c += strspn(c, "0123456789");
c += strspn(c, DIGITS);
if (*c == '-') {
/* A connector DRM device, let's ignore all but LVDS and eDP! */
@ -67,7 +68,8 @@ static struct udev_device *find_pci_or_platform_parent(struct udev_device *devic
unsigned long class = 0;
if (safe_atolu(value, &class) < 0) {
log_warning("Cannot parse PCI class %s of device %s:%s.", value, subsystem, sysname);
log_warning("Cannot parse PCI class %s of device %s:%s.",
value, subsystem, sysname);
return NULL;
}
@ -175,7 +177,9 @@ static bool validate_device(struct udev *udev, struct udev_device *device) {
if (same_device(parent, other_parent)) {
/* Both have the same PCI parent, that means
* we are out. */
log_debug("Skipping backlight device %s, since backlight device %s is on same PCI device and, takes precedence.", udev_device_get_sysname(device), udev_device_get_sysname(other));
log_debug("Skipping backlight device %s, since device %s is on same PCI device and takes precedence.",
udev_device_get_sysname(device),
udev_device_get_sysname(other));
return false;
}
@ -184,7 +188,9 @@ static bool validate_device(struct udev *udev, struct udev_device *device) {
/* The other is connected to the platform bus
* and we are a PCI device, that also means we
* are out. */
log_debug("Skipping backlight device %s, since backlight device %s is a platform device and takes precedence.", udev_device_get_sysname(device), udev_device_get_sysname(other));
log_debug("Skipping backlight device %s, since device %s is a platform device and takes precedence.",
udev_device_get_sysname(device),
udev_device_get_sysname(other));
return false;
}
}
@ -199,13 +205,14 @@ static unsigned get_max_brightness(struct udev_device *device) {
max_brightness_str = udev_device_get_sysattr_value(device, "max_brightness");
if (!max_brightness_str) {
log_warning("Failed to read max_brightness attribute");
log_warning("Failed to read 'max_brightness' attribute");
return 0;
}
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("Failed to parse 'max_brightness' \"%s\": %s",
max_brightness_str, strerror(-r));
return 0;
}
@ -262,7 +269,8 @@ int main(int argc, char *argv[]) {
r = mkdir_p("/var/lib/systemd/backlight", 0755);
if (r < 0) {
log_error("Failed to create backlight directory: %s", strerror(-r));
log_error("Failed to create backlight directory /var/lib/systemd/backlight: %s",
strerror(-r));
return EXIT_FAILURE;
}
@ -274,7 +282,7 @@ int main(int argc, char *argv[]) {
sysname = strchr(argv[2], ':');
if (!sysname) {
log_error("Requires pair of subsystem and sysname for specifying backlight device.");
log_error("Requires a subsystem and sysname pair specifying a backlight device.");
return EXIT_FAILURE;
}
@ -368,7 +376,8 @@ int main(int argc, char *argv[]) {
r = udev_device_set_sysattr_value(device, "brightness", value);
if (r < 0) {
log_error("Failed to write system attribute: %s", strerror(-r));
log_error("Failed to write system 'brightness' attribute: %s",
strerror(-r));
return EXIT_FAILURE;
}
@ -382,7 +391,7 @@ int main(int argc, char *argv[]) {
value = udev_device_get_sysattr_value(device, "brightness");
if (!value) {
log_error("Failed to read system attribute");
log_error("Failed to read system 'brightness' attribute");
return EXIT_FAILURE;
}