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authorTom Gundersen <teg@jklm.no>2016-06-27 09:58:59 +0200
committerTom Gundersen <teg@jklm.no>2016-06-27 09:58:59 +0200
commit21d6220fe0bf24fda7df9833961e022cafa439bc (patch)
tree1a53c763d5e5e50b9603968e03e69ce672ab2948 /src/libsystemd/sd-device/sd-device.c
parentde7e983ea13f1cb76339db9037fc5115199396d0 (diff)
sd-device: new_from_subsystem_sysnam - support a real subsystem called 'drivers'
We support writing out tags and db files in case a real subsystem called 'drivers' exists, so there is no reason to refuse parsing it.
Diffstat (limited to 'src/libsystemd/sd-device/sd-device.c')
-rw-r--r--src/libsystemd/sd-device/sd-device.c43
1 files changed, 20 insertions, 23 deletions
diff --git a/src/libsystemd/sd-device/sd-device.c b/src/libsystemd/sd-device/sd-device.c
index c13f6fca28..d503232505 100644
--- a/src/libsystemd/sd-device/sd-device.c
+++ b/src/libsystemd/sd-device/sd-device.c
@@ -259,7 +259,8 @@ _public_ int sd_device_new_from_devnum(sd_device **ret, char type, dev_t devnum)
}
_public_ int sd_device_new_from_subsystem_sysname(sd_device **ret, const char *subsystem, const char *sysname) {
- char *syspath;
+ char *name, *syspath;
+ size_t len = 0;
assert_return(ret, -EINVAL);
assert_return(subsystem, -EINVAL);
@@ -298,33 +299,29 @@ _public_ int sd_device_new_from_subsystem_sysname(sd_device **ret, const char *s
syspath = strjoina("/sys/bus/", subsys, "/drivers/", driver);
if (access(syspath, F_OK) >= 0)
return sd_device_new_from_syspath(ret, syspath);
- } else
- return -EINVAL;
- } else {
- char *name;
- size_t len = 0;
+ }
+ }
- /* translate sysname back to sysfs filename */
- name = strdupa(sysname);
- while (name[len] != '\0') {
- if (name[len] == '/')
- name[len] = '!';
+ /* translate sysname back to sysfs filename */
+ name = strdupa(sysname);
+ while (name[len] != '\0') {
+ if (name[len] == '/')
+ name[len] = '!';
- len++;
- }
+ len++;
+ }
- syspath = strjoina("/sys/subsystem/", subsystem, "/devices/", name);
- if (access(syspath, F_OK) >= 0)
- return sd_device_new_from_syspath(ret, syspath);
+ syspath = strjoina("/sys/subsystem/", subsystem, "/devices/", name);
+ if (access(syspath, F_OK) >= 0)
+ return sd_device_new_from_syspath(ret, syspath);
- syspath = strjoina("/sys/bus/", subsystem, "/devices/", name);
- if (access(syspath, F_OK) >= 0)
- return sd_device_new_from_syspath(ret, syspath);
+ syspath = strjoina("/sys/bus/", subsystem, "/devices/", name);
+ if (access(syspath, F_OK) >= 0)
+ return sd_device_new_from_syspath(ret, syspath);
- syspath = strjoina("/sys/class/", subsystem, "/", name);
- if (access(syspath, F_OK) >= 0)
- return sd_device_new_from_syspath(ret, syspath);
- }
+ syspath = strjoina("/sys/class/", subsystem, "/", name);
+ if (access(syspath, F_OK) >= 0)
+ return sd_device_new_from_syspath(ret, syspath);
return -ENODEV;
}