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-rw-r--r--util.c61
1 files changed, 49 insertions, 12 deletions
diff --git a/util.c b/util.c
index 9f1e1f7..fa378eb 100644
--- a/util.c
+++ b/util.c
@@ -974,6 +974,50 @@ dev_t devnm2devid(char *devnm)
}
/**
+ * 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.
*
@@ -1916,6 +1960,7 @@ int start_mdmon(char *devnm)
int len;
pid_t pid;
int status;
+ char *prefix = in_initrd() ? "initrd-" : "";
char pathbuf[1024];
char *paths[4] = {
pathbuf,
@@ -1926,7 +1971,7 @@ int start_mdmon(char *devnm)
if (check_env("MDADM_NO_MDMON"))
return 0;
- if (continue_via_systemd(devnm, MDMON_SERVICE))
+ if (continue_via_systemd(devnm, MDMON_SERVICE, prefix))
return 0;
/* That failed, try running mdmon directly */
@@ -2197,7 +2242,7 @@ void manage_fork_fds(int close_all)
* 1- if systemd service has been started
* 0- otherwise
*/
-int continue_via_systemd(char *devnm, char *service_name)
+int continue_via_systemd(char *devnm, char *service_name, char *prefix)
{
int pid, status;
char pathbuf[1024];
@@ -2209,7 +2254,7 @@ int continue_via_systemd(char *devnm, char *service_name)
case 0:
manage_fork_fds(1);
snprintf(pathbuf, sizeof(pathbuf),
- "%s@%s.service", service_name, devnm);
+ "%s@%s%s.service", service_name, prefix ?: "", devnm);
status = execl("/usr/bin/systemctl", "systemctl", "restart",
pathbuf, NULL);
status = execl("/bin/systemctl", "systemctl", "restart",
@@ -2227,15 +2272,7 @@ int continue_via_systemd(char *devnm, char *service_name)
int in_initrd(void)
{
- /* This is based on similar function in systemd. */
- struct statfs s;
- /* statfs.f_type is signed long on s390x and MIPS, causing all
- sorts of sign extension problems with RAMFS_MAGIC being
- defined as 0x858458f6 */
- return statfs("/", &s) >= 0 &&
- ((unsigned long)s.f_type == TMPFS_MAGIC ||
- ((unsigned long)s.f_type & 0xFFFFFFFFUL) ==
- ((unsigned long)RAMFS_MAGIC & 0xFFFFFFFFUL));
+ return access("/etc/initrd-release", F_OK) >= 0;
}
void reopen_mddev(int mdfd)