diff options
Diffstat (limited to 'mount.cifs.c')
| -rw-r--r-- | mount.cifs.c | 80 |
1 files changed, 78 insertions, 2 deletions
diff --git a/mount.cifs.c b/mount.cifs.c index 1e3d534..147f7fc 100644 --- a/mount.cifs.c +++ b/mount.cifs.c @@ -158,6 +158,8 @@ #define OPT_MAND 27 #define OPT_NOMAND 28 #define OPT_CRUID 29 +#define OPT_BKUPUID 30 +#define OPT_BKUPGID 31 /* struct for holding parsed mount info for use by privleged process */ @@ -843,6 +845,10 @@ static int parse_opt_token(const char *token) return OPT_REMOUNT; if (strncmp(token, "_netdev", 7) == 0) return OPT_IGNORE; + if (strncmp(token, "backupuid", 9) == 0) + return OPT_BKUPUID; + if (strncmp(token, "backupgid", 9) == 0) + return OPT_BKUPGID; return OPT_ERROR; } @@ -858,11 +864,13 @@ parse_options(const char *data, struct parsed_mount_info *parsed_info) int out_len = 0; int word_len; int rc = 0; + int got_bkupuid = 0; + int got_bkupgid = 0; int got_uid = 0; int got_cruid = 0; int got_gid = 0; - uid_t uid, cruid = 0; - gid_t gid; + uid_t uid, cruid = 0, bkupuid; + gid_t gid, bkupgid; char *ep; struct passwd *pw; struct group *gr; @@ -1171,6 +1179,42 @@ parse_options(const char *data, struct parsed_mount_info *parsed_info) break; case OPT_IGNORE: goto nocopy; + case OPT_BKUPUID: + if (!value || !*value) + goto nocopy; + + got_bkupuid = 1; + bkupuid = strtoul(value, &ep, 10); + if (!strlen(ep)) + goto nocopy; + + pw = getpwnam(value); + if (pw == NULL) { + fprintf(stderr, + "bad user name \"%s\"\n", value); + return EX_USAGE; + } + + bkupuid = pw->pw_uid; + goto nocopy; + case OPT_BKUPGID: + if (!value || !*value) + goto nocopy; + + got_bkupgid = 1; + bkupgid = strtoul(value, &ep, 10); + if (!strlen(ep)) + goto nocopy; + + gr = getgrnam(value); + if (gr == NULL) { + fprintf(stderr, + "bad group name \"%s\"\n", value); + return EX_USAGE; + } + + bkupgid = gr->gr_gid; + goto nocopy; } /* check size before copying option to buffer */ @@ -1246,6 +1290,38 @@ nocopy: } snprintf(out + out_len, word_len + 5, "gid=%s", txtbuf); } + if (got_bkupuid) { + word_len = snprintf(txtbuf, sizeof(txtbuf), "%u", bkupuid); + + /* comma + "backupuid=" + terminating NULL == 12 */ + if (out_len + word_len + 12 > MAX_OPTIONS_LEN) { + fprintf(stderr, "Options string too long\n"); + return EX_USAGE; + } + + if (out_len) { + strlcat(out, ",", MAX_OPTIONS_LEN); + out_len++; + } + snprintf(out + out_len, word_len + 11, "backupuid=%s", txtbuf); + out_len = strlen(out); + } + if (got_bkupgid) { + word_len = snprintf(txtbuf, sizeof(txtbuf), "%u", bkupgid); + + /* comma + "backkupgid=" + terminating NULL == 12 */ + if (out_len + word_len + 12 > MAX_OPTIONS_LEN) { + fprintf(stderr, "Options string too long\n"); + return EX_USAGE; + } + + if (out_len) { + strlcat(out, ",", MAX_OPTIONS_LEN); + out_len++; + } + snprintf(out + out_len, word_len + 11, "backupgid=%s", txtbuf); + } + return 0; } |