|
 |
f5835d |
Zseries only: Leave the hardware filedescriptors open.
|
|
|
f5835d |
|
|
|
f5835d |
All filedescriptors above 2 are getting closed when a new
|
|
|
f5835d |
sshd process to handle a new client connection is
|
|
|
f5835d |
spawned. As the process also chroot into an empty filesystem
|
|
|
f5835d |
without any device nodes, there is no chance to reopen the
|
|
|
f5835d |
files. This patch filters out the reqired fds in the
|
|
|
f5835d |
closefrom function so these are skipped in the close loop.
|
|
|
f5835d |
|
|
|
f5835d |
Author: Harald Freudenberger <freude@de.ibm.com>
|
|
|
f5835d |
|
|
|
f5835d |
---
|
|
|
f5835d |
openbsd-compat/bsd-closefrom.c | 26 ++++++++++++++++++++++++++
|
|
|
f5835d |
1 file changed, 26 insertions(+)
|
|
|
f5835d |
|
|
|
f5835d |
--- a/openbsd-compat/bsd-closefrom.c
|
|
|
f5835d |
+++ b/openbsd-compat/bsd-closefrom.c
|
|
|
f5835d |
@@ -82,7 +82,33 @@ closefrom(int lowfd)
|
|
|
f5835d |
fd = strtol(dent->d_name, &endp, 10);
|
|
|
f5835d |
if (dent->d_name != endp && *endp == '\0' &&
|
|
|
f5835d |
fd >= 0 && fd < INT_MAX && fd >= lowfd && fd != dirfd(dirp))
|
|
|
f5835d |
+#ifdef __s390__
|
|
|
f5835d |
+ {
|
|
|
f5835d |
+ /*
|
|
|
f5835d |
+ * the filedescriptors used to communicate with
|
|
|
f5835d |
+ * the device drivers to provide hardware support
|
|
|
f5835d |
+ * should survive. HF <freude@de.ibm.com>
|
|
|
f5835d |
+ */
|
|
|
f5835d |
+ char fpath[PATH_MAX], lpath[PATH_MAX];
|
|
|
f5835d |
+ len = snprintf(fpath, sizeof(fpath), "%s/%s",
|
|
|
f5835d |
+ fdpath, dent->d_name);
|
|
|
f5835d |
+ if (len > 0 && (size_t)len <= sizeof(fpath)) {
|
|
|
f5835d |
+ len = readlink(fpath, lpath, sizeof(lpath));
|
|
|
f5835d |
+ if (len > 0) {
|
|
|
f5835d |
+ lpath[len] = 0;
|
|
|
f5835d |
+ if (strstr(lpath, "dev/z90crypt")
|
|
|
f5835d |
+ || strstr(lpath, "dev/zcrypt")
|
|
|
f5835d |
+ || strstr(lpath, "dev/prandom")
|
|
|
f5835d |
+ || strstr(lpath, "dev/shm/icastats"))
|
|
|
f5835d |
+ fd = -1;
|
|
|
f5835d |
+ }
|
|
|
f5835d |
+ }
|
|
|
f5835d |
+ if (fd >= 0)
|
|
|
f5835d |
+ (void) close((int) fd);
|
|
|
f5835d |
+ }
|
|
|
f5835d |
+#else
|
|
|
f5835d |
(void) close((int) fd);
|
|
|
f5835d |
+#endif
|
|
|
f5835d |
}
|
|
|
f5835d |
(void) closedir(dirp);
|
|
|
f5835d |
} else
|
|
|
f5835d |
|