diff options
Diffstat (limited to 'lib/device/device_id.c')
| -rw-r--r-- | lib/device/device_id.c | 31 |
1 files changed, 26 insertions, 5 deletions
diff --git a/lib/device/device_id.c b/lib/device/device_id.c index 20901ab90..4d8fa5c9c 100644 --- a/lib/device/device_id.c +++ b/lib/device/device_id.c @@ -182,7 +182,9 @@ void free_dids(struct dm_list *ids) } } -int read_sys_block(struct cmd_context *cmd, struct device *dev, const char *suffix, char *sysbuf, int sysbufsize) +static int _read_sys_block(struct cmd_context *cmd, struct device *dev, + const char *suffix, char *sysbuf, int sysbufsize, + int binary, int *retlen) { char path[PATH_MAX]; dev_t devt = dev->dev; @@ -196,11 +198,17 @@ int read_sys_block(struct cmd_context *cmd, struct device *dev, const char *suff return 0; } - get_sysfs_value(path, sysbuf, sysbufsize, 0); + if (binary) { + ret = get_sysfs_binary(path, sysbuf, sysbufsize, retlen); + if (ret && !*retlen) + ret = 0; + } else { + ret = get_sysfs_value(path, sysbuf, sysbufsize, 0); + if (ret && !sysbuf[0]) + ret = 0; + } - if (sysbuf[0]) { - if (prim) - log_debug("Using primary device_id for partition %s.", dev_name(dev)); + if (ret) { sysbuf[sysbufsize - 1] = '\0'; return 1; } @@ -220,6 +228,19 @@ int read_sys_block(struct cmd_context *cmd, struct device *dev, const char *suff return 0; } +int read_sys_block(struct cmd_context *cmd, struct device *dev, + const char *suffix, char *sysbuf, int sysbufsize) +{ + return _read_sys_block(cmd, dev, suffix, sysbuf, sysbufsize, 0, NULL); +} + +int read_sys_block_binary(struct cmd_context *cmd, struct device *dev, + const char *suffix, char *sysbuf, int sysbufsize, + int *retlen) +{ + return _read_sys_block(cmd, dev, suffix, sysbuf, sysbufsize, 1, retlen); +} + static int _dm_uuid_has_prefix(char *sysbuf, const char *prefix) { if (!strncmp(sysbuf, prefix, strlen(prefix))) |