New functions added to remove literals and make the code reusable.
Use parse_num() instead of is_numer().
Signed-off-by: Mariusz Tkaczyk <mariusz.tkaczyk@xxxxxxxxxxxxxxx>
---
config.c | 17 ++---------------
lib.c | 2 +-
mdadm.h | 4 +++-
util.c | 44 ++++++++++++++++++++++++++++++++++++++++++++
4 files changed, 50 insertions(+), 17 deletions(-)
diff --git a/config.c b/config.c
index e61c0496..450880e3 100644
--- a/config.c
+++ b/config.c
@@ -385,17 +385,6 @@ void devline(char *line)
struct mddev_ident *mddevlist = NULL;
struct mddev_ident **mddevlp = &mddevlist;
-static int is_number(char *w)
-{
- /* check if there are 1 or more digits and nothing else */
- int digits = 0;
- while (*w && isdigit(*w)) {
- digits++;
- w++;
- }
- return (digits && ! *w);
-}
-
void arrayline(char *line)
{
char *w;
@@ -419,10 +408,8 @@ void arrayline(char *line)
if (is_devname_ignore(w) == true ||
strncmp(w, DEV_MD_DIR, DEV_MD_DIR_LEN) == 0 ||
(w[0] != '/' && w[0] != '<') ||
- (strncmp(w, DEV_NUM_PREF, DEV_NUM_PREF_LEN) == 0 &&
- is_number(w + DEV_NUM_PREF_LEN)) ||
- (strncmp(w, "/dev/md_d", 9) == 0 &&
- is_number(w + 9))) {
+ is_devname_md_numbered(w) == true ||
+ is_devname_md_d_numbered(w) == true) {
/* This is acceptable */;
if (mis.devname)
pr_err("only give one device per ARRAY line: %s and %s\n",
diff --git a/lib.c b/lib.c
index 65ea51e0..fe5c8d2c 100644
--- a/lib.c
+++ b/lib.c
@@ -570,7 +570,7 @@ void free_line(char *line)
*
* Return: 0 on success, 1 otherwise.
*/
-int parse_num(int *dest, char *num)
+int parse_num(int *dest, const char *num)
{
char *c = NULL;
long temp;
diff --git a/mdadm.h b/mdadm.h
index 87fd4a57..b5d58448 100644
--- a/mdadm.h
+++ b/mdadm.h
@@ -1599,7 +1599,7 @@ int default_layout(struct supertype *st, int level, int verbose);
extern int is_near_layout_10(int layout);
extern int parse_layout_10(char *layout);
extern int parse_layout_faulty(char *layout);
-extern int parse_num(int *dest, char *num);
+extern int parse_num(int *dest, const char *num);
extern int parse_cluster_confirm_arg(char *inp, char **devname, int *slot);
extern int check_ext2(int fd, char *name);
extern int check_reiser(int fd, char *name);
@@ -1649,6 +1649,8 @@ extern int use_udev(void);
extern unsigned long GCD(unsigned long a, unsigned long b);
extern int conf_name_is_free(char *name);
extern bool is_devname_ignore(char *devname);
+extern bool is_devname_md_numbered(const char *devname);
+extern bool is_devname_md_d_numbered(const char *devname);
extern int conf_verify_devnames(struct mddev_ident *array_list);
extern int devname_matches(char *name, char *match);
extern struct mddev_ident *conf_match(struct supertype *st,
diff --git a/util.c b/util.c
index 9f1e1f7c..23372b7e 100644
--- a/util.c
+++ b/util.c
@@ -973,6 +973,50 @@ dev_t devnm2devid(char *devnm)
return 0;
}
+/**
+ * is_devname_numbered() - helper for numbered devname verification.
+ * @devname: path or name to check.
+ * @pref: expected devname prefix.
+ * @pref_len: prefix len.
+ */
+static bool is_devname_numbered(const char *devname, const char *pref, const int pref_len)
+{
+ int val;
+
+ assert(devname && pref);
+
+ if (strncmp(devname, pref, pref_len) != 0)
+ return false;
+
+ if (parse_num(&val, devname + pref_len) != 0)
+ return false;
+
+ if (val > 127)
+ return false;
+
+ return true;
+}
+
+/**
+ * is_devname_md_numbered() - check if &devname is numbered MD device (md).
+ * @devname: path or name to check.
+ */
+bool is_devname_md_numbered(const char *devname)
+{
+ return is_devname_numbered(devname, DEV_NUM_PREF, DEV_NUM_PREF_LEN);
+}
+
+/**
+ * is_devname_md_d_numbered() - check if &devname is secondary numbered MD device (md_d).
+ * @devname: path or name to check.
+ */
+bool is_devname_md_d_numbered(const char *devname)
+{
+ static const char d_dev[] = DEV_NUM_PREF "_d";
+
+ return is_devname_numbered(devname, d_dev, sizeof(d_dev) - 1);
+}
+
/**
* get_md_name() - Get main dev node of the md device.
* @devnm: Md device name or path.
--
2.26.2
