On 05/12/18 22:35, Rafał Miłecki wrote:
From: Rafał Miłecki <ra...@milecki.pl>
This is what was implemented in mountd and what some scripts used to
use. It's a pretty generic solution for managing software that may use
e.g. USB storage.
Could you explain a bit more about what is this doing instead of just
mentioning mountd?
There is pretty scarce info about mountd.
-Alberto
Signed-off-by: Rafał Miłecki <ra...@milecki.pl>
---
block.c | 29 +++++++++++++++++++++++++++++
1 file changed, 29 insertions(+)
diff --git a/block.c b/block.c
index 46050b4..fe63fb0 100644
--- a/block.c
+++ b/block.c
@@ -880,6 +880,31 @@ static int exec_mount(const char *source, const char
*target,
return err;
}
+static void hotplug_call_mount(const char *action, const char *device)
+{
+ pid_t pid;
+
+ pid = fork();
+ if (!pid) {
+ char * const argv[] = { "hotplug-call", "mount", NULL };
+ char actionenv[] = "ACTION=xxxxxx";
+ char deviceenv[32];
+ char *envp[] = { actionenv, deviceenv, NULL };
+
+ snprintf(actionenv, sizeof(actionenv), "ACTION=%s", action);
+ snprintf(deviceenv, sizeof(deviceenv), "DEVICE=%s", device);
+
+ execve("/sbin/hotplug-call", argv, envp);
+ exit(-1);
+ } else if (pid > 0) {
+ int status;
+
+ waitpid(pid, &status, 0);
+ if (WEXITSTATUS(status))
+ ULOG_ERR("hotplug-call call failed: %d\n",
WEXITSTATUS(status));
+ }
+}
+
static int handle_mount(const char *source, const char *target,
const char *fstype, struct mount *m)
{
@@ -1079,6 +1104,8 @@ static int mount_device(struct probe_info *pr, int type)
handle_swapfiles(true);
+ hotplug_call_mount("add", device);
+
return 0;
}
@@ -1091,6 +1118,8 @@ static int umount_device(char *path)
if (!mp)
return -1;
+ hotplug_call_mount("remove", basename(path));
+
err = umount2(mp, MNT_DETACH);
if (err)
ULOG_ERR("unmounting %s (%s) failed (%d) - %m\n", path, mp,
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