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sd-device: add device_get_sysattr_u64() helper

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Lennart Poettering
2025-08-28 10:52:56 +02:00
parent 4f21c3d9b7
commit cb06a80482
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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@@ -21,6 +21,7 @@ static inline int device_get_sysattr_unsigned(sd_device *device, const char *sys
return device_get_sysattr_unsigned_full(device, sysattr, 0, ret_value);
}
int device_get_sysattr_u32(sd_device *device, const char *sysattr, uint32_t *ret_value);
int device_get_sysattr_u64(sd_device *device, const char *sysattr, uint64_t *ret_value);
int device_get_sysattr_bool(sd_device *device, const char *sysattr);
int device_get_devlink_priority(sd_device *device, int *ret);
int device_get_devnode_mode(sd_device *device, mode_t *ret);

19
src/libsystemd/sd-device/sd-device.c
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@@ -2652,6 +2652,25 @@ int device_get_sysattr_u32(sd_device *device, const char *sysattr, uint32_t *ret
return v > 0;
}
int device_get_sysattr_u64(sd_device *device, const char *sysattr, uint64_t *ret_value) {
const char *value;
int r;
r = sd_device_get_sysattr_value(device, sysattr, &value);
if (r < 0)
return r;
uint64_t v;
r = safe_atou64(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_bool(sd_device *device, const char *sysattr) {
const char *value;
int r;