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sd-device: introduce device_get_sysattr_int()

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This commit is contained in:
Yu Watanabe
2022-09-25 13:17:20 +09:00
parent e56074a212
commit bb1bc2fcb0
2 changed files with 20 additions and 0 deletions
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1
src/libsystemd/sd-device/device-private.h
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@@ -18,6 +18,7 @@ int device_new_from_strv(sd_device **ret, char **strv);
int device_opendir(sd_device *device, const char *subdir, DIR **ret);
int device_get_property_bool(sd_device *device, const char *key);
int device_get_sysattr_int(sd_device *device, const char *sysattr, int *ret_value);
int device_get_sysattr_unsigned(sd_device *device, const char *sysattr, unsigned *ret_value);
int device_get_sysattr_bool(sd_device *device, const char *sysattr);
int device_get_device_id(sd_device *device, const char **ret);

19
src/libsystemd/sd-device/sd-device.c
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@@ -2210,6 +2210,25 @@ _public_ int sd_device_get_sysattr_value(sd_device *device, const char *sysattr,
return 0;
}
int device_get_sysattr_int(sd_device *device, const char *sysattr, int *ret_value) {
const char *value;
int r;
r = sd_device_get_sysattr_value(device, sysattr, &value);
if (r < 0)
return r;
int v;
r = safe_atoi(value, &v);
if (r < 0)
return log_device_debug_errno(device, r, "Failed to parse '%s' attribute: %m", sysattr);
if (ret_value)
*ret_value = v;
/* We return "true" if the value is positive. */
return v > 0;
}
int device_get_sysattr_unsigned(sd_device *device, const char *sysattr, unsigned *ret_value) {
const char *value;
int r;