diff options
Diffstat (limited to 'utils/nfsd/nfssvc.c')
| -rw-r--r-- | utils/nfsd/nfssvc.c | 52 |
1 files changed, 49 insertions, 3 deletions
diff --git a/utils/nfsd/nfssvc.c b/utils/nfsd/nfssvc.c index 34c67ca..7693626 100644 --- a/utils/nfsd/nfssvc.c +++ b/utils/nfsd/nfssvc.c @@ -15,9 +15,11 @@ #include <netdb.h> #include <netinet/in.h> #include <arpa/inet.h> +#include <sys/stat.h> #include <unistd.h> #include <fcntl.h> #include <errno.h> +#include <stdlib.h> #include "nfslib.h" #include "xlog.h" @@ -31,9 +33,13 @@ */ #undef IPV6_SUPPORTED -#define NFSD_PORTS_FILE "/proc/fs/nfsd/portlist" -#define NFSD_VERS_FILE "/proc/fs/nfsd/versions" -#define NFSD_THREAD_FILE "/proc/fs/nfsd/threads" +#ifndef NFSD_FS_DIR +#define NFSD_FS_DIR "/proc/fs/nfsd" +#endif + +#define NFSD_PORTS_FILE NFSD_FS_DIR "/portlist" +#define NFSD_VERS_FILE NFSD_FS_DIR "/versions" +#define NFSD_THREAD_FILE NFSD_FS_DIR "/threads" /* * declaring a common static scratch buffer here keeps us from having to @@ -44,6 +50,46 @@ char buf[128]; /* + * Using the "new" interfaces for nfsd requires that /proc/fs/nfsd is + * actually mounted. Make an attempt to mount it here if it doesn't appear + * to be. If the mount attempt fails, no big deal -- fall back to using nfsctl + * instead. + */ +void +nfssvc_mount_nfsdfs(char *progname) +{ + int err; + struct stat statbuf; + + err = stat(NFSD_THREAD_FILE, &statbuf); + if (err == 0) + return; + + if (errno != ENOENT) { + xlog(L_ERROR, "Unable to stat %s: errno %d (%m)", + NFSD_THREAD_FILE, errno); + return; + } + + /* + * this call can return an error if modprobe is set up to automatically + * mount nfsdfs when nfsd.ko is plugged in. So, ignore the return + * code from it and just check for the "threads" file afterward. + */ + system("/bin/mount -t nfsd nfsd " NFSD_FS_DIR " >/dev/null 2>&1"); + + err = stat(NFSD_THREAD_FILE, &statbuf); + if (err == 0) + return; + + xlog(L_WARNING, "Unable to access " NFSD_FS_DIR " errno %d (%m)." + "\nPlease try, as root, 'mount -t nfsd nfsd " NFSD_FS_DIR + "' and then restart %s to correct the problem", errno, progname); + + return; +} + +/* * Are there already sockets configured? If not, then it is safe to try to * open some and pass them through. * |