diff options
| -rw-r--r-- | util-linux/mdev.c | 28 |
1 files changed, 15 insertions, 13 deletions
diff --git a/util-linux/mdev.c b/util-linux/mdev.c index 2451cca..f965b60 100644 --- a/util-linux/mdev.c +++ b/util-linux/mdev.c @@ -90,21 +90,24 @@ static void make_device(char *path, int delete) device_name = bb_basename(path); /* http://kernel.org/doc/pending/hotplug.txt says that only * "/sys/block/..." is for block devices. "/sys/bus" etc is not. - * But since 2.6.25 block devices are also in /sys/class/block. - * We use strstr("/block/") to forestall future surprises. */ + * But since 2.6.25 block devices are also in /sys/class/block, + * we use strstr("/block/") to forestall future surprises. */ type = S_IFCHR; if (strstr(path, "/block/")) type = S_IFBLK; + /* Make path point to subsystem/device_name */ + path += sizeof("/sys/class/") - 1; + #if !ENABLE_FEATURE_MDEV_CONF mode = 0660; #else /* If we have config file, look up user settings */ parser = config_open2("/etc/mdev.conf", fopen_for_read); while (1) { - regmatch_t off[1 + 9*ENABLE_FEATURE_MDEV_RENAME_REGEXP]; + regmatch_t off[1 + 9 * ENABLE_FEATURE_MDEV_RENAME_REGEXP]; int keep_matching; - char *val; + char *val, *name; struct bb_uidgid_t ugid; char *tokens[4]; # if ENABLE_FEATURE_MDEV_EXEC @@ -128,6 +131,10 @@ static void make_device(char *path, int delete) keep_matching = ('-' == val[0]); val += keep_matching; /* swallow leading dash */ + /* Match against either subsystem/device_name + * or device_name alone */ + name = strchr(val, '/') ? path : (char *) device_name; + /* Fields: regex uid:gid mode [alias] [cmd] */ /* 1st field: @<numeric maj,min>... */ @@ -149,15 +156,10 @@ static void make_device(char *path, int delete) } else { /* ... or regex to match device name */ regex_t match; int result; - const char *dev_name_or_subsystem = device_name; - if ('/' == val[0] && subsystem) { - dev_name_or_subsystem = subsystem; - val++; - } /* Is this it? */ xregcomp(&match, val, REG_EXTENDED); - result = regexec(&match, dev_name_or_subsystem, ARRAY_SIZE(off), off, 0); + result = regexec(&match, name, ARRAY_SIZE(off), off, 0); regfree(&match); //bb_error_msg("matches:"); @@ -171,7 +173,7 @@ static void make_device(char *path, int delete) /* If not this device, skip rest of line */ /* (regexec returns whole pattern as "range" 0) */ if (result || off[0].rm_so - || ((int)off[0].rm_eo != (int)strlen(dev_name_or_subsystem)) + || ((int)off[0].rm_eo != (int)strlen(name)) ) { continue; /* this line doesn't match */ } @@ -214,7 +216,7 @@ static void make_device(char *path, int delete) if (*s++ == '%') n++; - p = alias = xzalloc(strlen(a) + n * strlen(device_name)); + p = alias = xzalloc(strlen(a) + n * strlen(name)); s = a + 1; while (*s) { *p = *s; @@ -222,7 +224,7 @@ static void make_device(char *path, int delete) i = (s[1] - '0'); if (i <= 9 && off[i].rm_so >= 0) { n = off[i].rm_eo - off[i].rm_so; - strncpy(p, device_name + off[i].rm_so, n); + strncpy(p, name + off[i].rm_so, n); p += n - 1; s++; } |