You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
111 lines
2.8 KiB
111 lines
2.8 KiB
From b6a84d4e92f876acd120d3062a8302db5dd2498c Mon Sep 17 00:00:00 2001
|
|
From: Mateusz Grzonka <mateusz.grzonka@intel.com>
|
|
Date: Thu, 2 Feb 2023 12:27:03 +0100
|
|
Subject: [PATCH 091/125] Mdmonitor: Refactor write_autorebuild_pid()
|
|
|
|
Add better error handling and check for symlinks when opening MDMON_DIR.
|
|
|
|
Signed-off-by: Mateusz Grzonka <mateusz.grzonka@intel.com>
|
|
Acked-by: Coly Li <colyli@suse.de>
|
|
Signed-off-by: Jes Sorensen <jes@trained-monkey.org>
|
|
---
|
|
Monitor.c | 55 ++++++++++++++++++++++++++++++++++++-------------------
|
|
1 file changed, 36 insertions(+), 19 deletions(-)
|
|
|
|
diff --git a/Monitor.c b/Monitor.c
|
|
index 39598ba0..14a2dfe5 100644
|
|
--- a/Monitor.c
|
|
+++ b/Monitor.c
|
|
@@ -33,6 +33,7 @@
|
|
#endif
|
|
|
|
#define EVENT_NAME_MAX 32
|
|
+#define AUTOREBUILD_PID_PATH MDMON_DIR "/autorebuild.pid"
|
|
|
|
struct state {
|
|
char devname[MD_NAME_MAX + sizeof("/dev/md/")]; /* length of "/dev/md/" + device name + terminating byte*/
|
|
@@ -126,7 +127,7 @@ static int check_udev_activity(void);
|
|
static void link_containers_with_subarrays(struct state *list);
|
|
static int make_daemon(char *pidfile);
|
|
static void try_spare_migration(struct state *statelist);
|
|
-static void write_autorebuild_pid(void);
|
|
+static int write_autorebuild_pid(void);
|
|
|
|
int Monitor(struct mddev_dev *devlist,
|
|
char *mailaddr, char *alert_cmd,
|
|
@@ -234,7 +235,8 @@ int Monitor(struct mddev_dev *devlist,
|
|
}
|
|
|
|
if (share)
|
|
- write_autorebuild_pid();
|
|
+ if (write_autorebuild_pid() != 0)
|
|
+ return 1;
|
|
|
|
if (devlist == NULL) {
|
|
mdlist = conf_get_ident(NULL);
|
|
@@ -440,29 +442,44 @@ static int check_one_sharer(int scan)
|
|
return 0;
|
|
}
|
|
|
|
-static void write_autorebuild_pid()
|
|
+/*
|
|
+ * write_autorebuild_pid() - Writes pid to autorebuild.pid file.
|
|
+ *
|
|
+ * Return: 0 on success, 1 on error
|
|
+ */
|
|
+static int write_autorebuild_pid(void)
|
|
{
|
|
- char path[PATH_MAX];
|
|
- int pid;
|
|
- FILE *fp = NULL;
|
|
- sprintf(path, "%s/autorebuild.pid", MDMON_DIR);
|
|
+ FILE *fp;
|
|
+ int fd;
|
|
|
|
if (mkdir(MDMON_DIR, 0700) < 0 && errno != EEXIST) {
|
|
- pr_err("Can't create autorebuild.pid file\n");
|
|
- } else {
|
|
- int fd = open(path, O_WRONLY | O_CREAT | O_TRUNC, 0700);
|
|
+ pr_err("%s: %s\n", strerror(errno), MDMON_DIR);
|
|
+ return 1;
|
|
+ }
|
|
|
|
- if (fd >= 0)
|
|
- fp = fdopen(fd, "w");
|
|
+ if (!is_directory(MDMON_DIR)) {
|
|
+ pr_err("%s is not a regular directory.\n", MDMON_DIR);
|
|
+ return 1;
|
|
+ }
|
|
|
|
- if (!fp)
|
|
- pr_err("Can't create autorebuild.pid file\n");
|
|
- else {
|
|
- pid = getpid();
|
|
- fprintf(fp, "%d\n", pid);
|
|
- fclose(fp);
|
|
- }
|
|
+ fd = open(AUTOREBUILD_PID_PATH, O_WRONLY | O_CREAT | O_TRUNC, 0700);
|
|
+
|
|
+ if (fd < 0) {
|
|
+ pr_err("Error opening %s file.\n", AUTOREBUILD_PID_PATH);
|
|
+ return 1;
|
|
}
|
|
+
|
|
+ fp = fdopen(fd, "w");
|
|
+
|
|
+ if (!fp) {
|
|
+ pr_err("Error opening fd for %s file.\n", AUTOREBUILD_PID_PATH);
|
|
+ return 1;
|
|
+ }
|
|
+
|
|
+ fprintf(fp, "%d\n", getpid());
|
|
+
|
|
+ fclose(fp);
|
|
+ return 0;
|
|
}
|
|
|
|
#define BASE_MESSAGE "%s event detected on md device %s"
|
|
--
|
|
2.38.1
|
|
|