File sysvinit-2.86-fuse-no-kill.patch of Package sysvinit

Overview Repositories Revisions Requests Users Attributes Meta

File sysvinit-2.86-fuse-no-kill.patch of Package sysvinit (Revision f20c0ee87976d978213847d6ba30f06b)

Currently displaying revision f20c0ee87976d978213847d6ba30f06b , Show latest

--- src/killall5.c
+++ src/killall5.c	2009-01-27 16:32:40.048701097 +0100
@@ -59,6 +59,8 @@ typedef struct proc {
 	pid_t pid;		/* Process ID.			  */
 	int sid;		/* Session ID.			  */
 	char kernel;		/* Kernel thread or zombie.	  */
+	char isfuse;		/* Provides FUSE filesystems	  */
+	char isudev;		/* Is the uevent handler	  */
 	char nfs;		/* Binary is loacted on NFS part. */
 	struct proc *next;	/* Pointer to next struct. 	  */
 } PROC;
@@ -283,6 +285,38 @@ int readarg(FILE *fp, char *buf, int sz)
 }
 
 /*
+ *	Scan the filedescriptors of pid for /dev/fuse
+ */
+int is_fuse(const char *pid) {
+	DIR		*dir;
+	char		path[256];
+	char		buf[256];
+	struct dirent	*d;
+	ssize_t		len;
+
+	/* Open /proc/pid/fd/ */
+	snprintf(path, sizeof(path), "/proc/%s/fd", pid);
+	if ((dir = opendir(path)) != NULL) {
+		int dfd = dirfd(dir);
+		/* Walk through the directory. */
+		while ((d = readdir(dir)) != NULL) {
+			if (*d->d_name == '.')
+				continue;
+			/* check for /dev/fuse */
+			if ((len = readlinkat(dfd, d->d_name, buf, sizeof(buf))) > 0) {
+				buf[len] = '\0';
+				if (strcmp("/dev/fuse", buf) == 0)
+					return 1;	/* Fuse filesystem */
+			}
+		}
+		closedir(dir);
+	}
+
+	/* Not a fuse filesystem */
+	return 0;
+}
+
+/*
  *	Read the proc filesystem.
  */
 int readproc()
@@ -438,13 +472,19 @@ int readproc()
 
 		/* Try to stat the executable. */
 		snprintf(path, sizeof(path), "/proc/%s/exe", d->d_name);
-		if (check4nfs(path, NULL))
+		if (check4nfs(path, buf))
 			p->nfs = 1;
 		if ((p->nfs == 0) && (stat(path, &st) == 0)) {
 			p->dev = st.st_dev;
 			p->ino = st.st_ino;
 		}
 
+		/* Check for uevent handler */
+		p->isudev = (strncmp(buf, "/sbin/udevd", 11) == 0);
+
+		/* Check for provider of FUSE filesystems */
+		p->isfuse = is_fuse(d->d_name);
+
 		/* Link it into the list. */
 		p->next = plist;
 		plist = p;
@@ -779,14 +819,16 @@ int main(int argc, char **argv)
 		exit(1);
 	}
 
-	/* Now kill all processes except our session. */
+	/* Now kill all processes except init (pid 1), our session, and FUSE filesystems. */
 	sid = (int)getsid(0);
 	pid = (int)getpid();
 	for (p = plist; p; p = p->next) {
-		if (p->pid == 1 || p->pid == pid || p->sid == sid || p->kernel) {
+		if (p->pid == 1 || p->pid == pid || p->sid == sid || p->kernel || p->isfuse) {
 			kill(p->pid, SIGCONT);
 			continue;
 		}
+		if (((sig == SIGTERM) || (sig == SIGKILL)) && p->isudev)
+			continue;
 		kill(p->pid, sig);
 	}

Places

File sysvinit-2.86-fuse-no-kill.patch of Package sysvinit (Revision f20c0ee87976d978213847d6ba30f06b)

Places