118 lines
2.8 KiB
Diff
118 lines
2.8 KiB
Diff
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--- src/killall5.c
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+++ src/killall5.c
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@@ -274,6 +274,7 @@
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/*
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* Read the proc filesystem.
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+ * CWD must be /proc.
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*/
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int readproc()
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{
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@@ -289,7 +290,7 @@
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int pid, f;
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/* Open the /proc directory. */
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- if ((dir = opendir("/proc")) == NULL) {
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+ if ((dir = opendir(".")) == NULL) {
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nsyslog(LOG_ERR, "cannot opendir(/proc)");
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return -1;
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}
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@@ -316,10 +317,10 @@
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memset(p, 0, sizeof(PROC));
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/* Open the status file. */
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- snprintf(path, sizeof(path), "/proc/%s/stat", d->d_name);
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+ snprintf(path, sizeof(path), "%s/stat", d->d_name);
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/* Read SID & statname from it. */
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- if ((fp = fopen(path, "r")) != NULL) {
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+ if ((fp = fopen(path, "r")) != NULL) {
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buf[0] = 0;
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fgets(buf, sizeof(buf), fp);
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@@ -333,7 +334,7 @@
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if (q == NULL) {
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p->sid = 0;
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nsyslog(LOG_ERR,
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- "can't get program name from %s\n",
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+ "can't get program name from /proc/%s\n",
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path);
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if (p->argv0) free(p->argv0);
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if (p->argv1) free(p->argv1);
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@@ -379,7 +380,7 @@
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continue;
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}
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- snprintf(path, sizeof(path), "/proc/%s/cmdline", d->d_name);
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+ snprintf(path, sizeof(path), "%s/cmdline", d->d_name);
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if ((fp = fopen(path, "r")) != NULL) {
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/* Now read argv[0] */
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@@ -446,6 +447,39 @@
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return 0;
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}
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+/*
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+ * Scan the filedescriptors of pid for /dev/fuse
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+ * CWD must be /proc.
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+ */
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+int is_fuse(int pid) {
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+ DIR *dir;
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+ char path[256];
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+ char buf[256];
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+ struct dirent *d;
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+ ssize_t len;
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+
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+ /* Open /proc/pid/fd/ */
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+ snprintf(path, sizeof(path), "%d/fd", pid);
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+ if ((dir = opendir(path)) != NULL) {
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+ /* Walk through the directory. */
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+ while ((d = readdir(dir)) != NULL) {
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+ /* check for /dev/fuse */
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+ snprintf(path, sizeof(path), "%d/fd/%s",
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+ pid, d->d_name);
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+ if ((len = readlink(path, buf, sizeof(buf))) > 0) {
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+ if (strncmp("/dev/fuse", buf, len) == 0) {
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+ /* Fuse filesystem */
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+ return 1;
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+ }
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+ }
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+ }
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+ closedir(dir);
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+ }
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+
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+ /* Not a fuse filesystem */
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+ return 0;
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+}
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+
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PIDQ_HEAD *init_pid_q(PIDQ_HEAD *q)
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{
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q->head = q->next = q->tail = NULL;
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@@ -749,6 +783,11 @@
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/* Which NFS partitions are online? */
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init_nfs();
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+ if (chdir("/proc") == -1) {
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+ nsyslog(LOG_ERR, "chdir /proc failed");
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+ return(1);
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+ }
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+
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/*
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* Ignoring SIGKILL and SIGSTOP do not make sense, but
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* someday kill(-1, sig) might kill ourself if we don't
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@@ -769,11 +808,12 @@
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exit(1);
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}
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- /* Now kill all processes except our session. */
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+ /* Now kill all processes except init (pid 1), our session,
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+ and FUSE filesystems. */
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sid = (int)getsid(0);
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pid = (int)getpid();
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for (p = plist; p; p = p->next) {
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- if (p->pid == 1 || p->pid == pid || p->sid == sid || p->kernel) {
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+ if (p->pid == 1 || p->pid == pid || p->sid == sid || p->kernel || is_fuse(p->pid)) {
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kill(p->pid, SIGCONT);
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continue;
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}
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