diff options
Diffstat (limited to 'sbin/umount/umount.c')
| -rw-r--r-- | sbin/umount/umount.c | 46 |
1 files changed, 41 insertions, 5 deletions
diff --git a/sbin/umount/umount.c b/sbin/umount/umount.c index 4ed67bf..209808c 100644 --- a/sbin/umount/umount.c +++ b/sbin/umount/umount.c @@ -53,6 +53,7 @@ static const char rcsid[] = #include <rpc/rpc.h> #include <nfs/rpcv2.h> +#include <ctype.h> #include <err.h> #include <errno.h> #include <fstab.h> @@ -66,7 +67,7 @@ static const char rcsid[] = #define ISDOT(x) ((x)[0] == '.' && (x)[1] == '\0') #define ISDOTDOT(x) ((x)[0] == '.' && (x)[1] == '.' && (x)[2] == '\0') -typedef enum { MNTON, MNTFROM, NOTHING } mntwhat; +typedef enum { MNTON, MNTFROM, MNTFSID, NOTHING } mntwhat; typedef enum { MARK, UNMARK, NAME, COUNT, FREE } dowhat; struct addrinfo *nfshost_ai = NULL; @@ -465,6 +466,8 @@ getmntentry(const char *fromname, const char *onname, mntwhat what, dowhat mark) static size_t mntsize = 0; static char *mntcheck = NULL; static char *mntcount = NULL; + fsid_t fsid; + char hexbuf[3]; int i, count; if (mntsize <= 0) { @@ -489,10 +492,41 @@ getmntentry(const char *fromname, const char *onname, mntwhat what, dowhat mark) switch (mark) { case NAME: /* Return only the specific name */ + if (fromname == NULL) + return (NULL); + if (what == MNTFSID) { + /* Convert the hex filesystem ID to a fsid_t. */ + if (strlen(fromname) != sizeof(fsid) * 2) + return (NULL); + hexbuf[2] = '\0'; + for (i = 0; i < sizeof(fsid); i++) { + hexbuf[0] = fromname[i * 2]; + hexbuf[1] = fromname[i * 2 + 1]; + if (!isxdigit(hexbuf[0]) || + !isxdigit(hexbuf[1])) + return (NULL); + ((u_char *)&fsid)[i] = strtol(hexbuf, NULL, 16); + } + } for (i = mntsize - 1; i >= 0; i--) { - if (fromname != NULL && !strcmp((what == MNTFROM) ? - mntbuf[i].f_mntfromname : mntbuf[i].f_mntonname, - fromname) && mntcheck[i] != 1) + switch (what) { + case MNTON: + if (strcmp(mntbuf[i].f_mntonname, + fromname) != 0) + continue; + break; + case MNTFROM: + if (strcmp(mntbuf[i].f_mntfromname, + fromname) != 0) + continue; + case MNTFSID: + if (bcmp(&mntbuf[i].f_fsid, &fsid, + sizeof(fsid)) != 0) + continue; + case NOTHING: /* silence compiler warning */ + break; + } + if (mntcheck[i] != 1) return (&mntbuf[i]); } @@ -609,7 +643,9 @@ checkmntlist(char *name) { struct statfs *sfs; - sfs = getmntentry(name, NULL, MNTON, NAME); + sfs = getmntentry(name, NULL, MNTFSID, NAME); + if (sfs == NULL) + sfs = getmntentry(name, NULL, MNTON, NAME); if (sfs == NULL) sfs = getmntentry(name, NULL, MNTFROM, NAME); return (sfs); |
