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Annotation of src/usr.bin/cvs/repository.c, Revision 1.1

1.1     ! joris       1: /*     $OpenBSD$       */
        !             2: /*
        !             3:  * Copyright (c) 2006 Joris Vink <joris@openbsd.org>
        !             4:  *
        !             5:  * Permission to use, copy, modify, and distribute this software for any
        !             6:  * purpose with or without fee is hereby granted, provided that the above
        !             7:  * copyright notice and this permission notice appear in all copies.
        !             8:  *
        !             9:  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
        !            10:  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
        !            11:  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
        !            12:  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
        !            13:  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
        !            14:  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
        !            15:  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
        !            16:  */
        !            17:
        !            18: #include "includes.h"
        !            19:
        !            20: #include "cvs.h"
        !            21: #include "file.h"
        !            22: #include "log.h"
        !            23: #include "repository.h"
        !            24: #include "worklist.h"
        !            25:
        !            26: struct cvs_wklhead repo_locks;
        !            27:
        !            28: void
        !            29: cvs_repository_unlock(const char *repo)
        !            30: {
        !            31:        int l;
        !            32:        char fpath[MAXPATHLEN];
        !            33:
        !            34:        cvs_log(LP_TRACE, "cvs_repository_unlock(%s)", repo);
        !            35:
        !            36:        l = snprintf(fpath, sizeof(fpath), "%s/%s", repo, CVS_LOCK);
        !            37:        if (l == -1 || l >= (int)sizeof(fpath))
        !            38:                fatal("cvs_repository_unlock: overflow");
        !            39:
        !            40:        /* XXX - this ok? */
        !            41:        cvs_worklist_run(&repo_locks, cvs_worklist_unlink);
        !            42: }
        !            43:
        !            44: void
        !            45: cvs_repository_lock(const char *repo)
        !            46: {
        !            47:        int l, i;
        !            48:        uid_t myuid;
        !            49:        struct stat st;
        !            50:        char fpath[MAXPATHLEN];
        !            51:        struct passwd *pw;
        !            52:
        !            53:        cvs_log(LP_TRACE, "cvs_repository_lock(%s)", repo);
        !            54:
        !            55:        l = snprintf(fpath, sizeof(fpath), "%s/%s", repo, CVS_LOCK);
        !            56:        if (l == -1 || l >= (int)sizeof(fpath))
        !            57:                fatal("cvs_repository_lock: overflow");
        !            58:
        !            59:        myuid = getuid();
        !            60:        for (i = 0; i < CVS_LOCK_TRIES; i++) {
        !            61:                if (cvs_quit)
        !            62:                        fatal("received signal %d", sig_received);
        !            63:
        !            64:                if (stat(fpath, &st) == -1)
        !            65:                        break;
        !            66:
        !            67:                if ((pw = getpwuid(st.st_uid)) == NULL)
        !            68:                        fatal("cvs_repository_lock: %s", strerror(errno));
        !            69:
        !            70:                cvs_log(LP_NOTICE, "waiting for %s's lock in '%s'",
        !            71:                    pw->pw_name, repo);
        !            72:                sleep(CVS_LOCK_SLEEP);
        !            73:        }
        !            74:
        !            75:        if (i == CVS_LOCK_TRIES)
        !            76:                fatal("maximum wait time for lock inside '%s' reached", repo);
        !            77:
        !            78:        if ((i = open(fpath, O_WRONLY|O_CREAT|O_TRUNC, 0755)) < 0) {
        !            79:                if (errno == EEXIST)
        !            80:                        fatal("cvs_repository_lock: somebody beat us");
        !            81:                else
        !            82:                        fatal("cvs_repostitory_lock: %s: %s",
        !            83:                            fpath, strerror(errno));
        !            84:        }
        !            85:
        !            86:        (void)close(i);
        !            87:        cvs_worklist_add(fpath, &repo_locks);
        !            88: }
        !            89:
        !            90: void
        !            91: cvs_repository_getdir(const char *dir, const char *wdir,
        !            92:        struct cvs_flisthead *fl, struct cvs_flisthead *dl)
        !            93: {
        !            94:        int l;
        !            95:        DIR *dirp;
        !            96:        struct dirent *dp;
        !            97:        char *s, fpath[MAXPATHLEN];
        !            98:
        !            99:        if ((dirp = opendir(dir)) == NULL)
        !           100:                fatal("cvs_repository_getdir: failed to open '%s'", dir);
        !           101:
        !           102:        while ((dp = readdir(dirp)) != NULL) {
        !           103:                if (!strcmp(dp->d_name, ".") ||
        !           104:                    !strcmp(dp->d_name, "..") ||
        !           105:                    !strcmp(dp->d_name, "Attic") ||
        !           106:                    !strcmp(dp->d_name, CVS_LOCK))
        !           107:                        continue;
        !           108:
        !           109:                if (cvs_file_chkign(dp->d_name))
        !           110:                        continue;
        !           111:
        !           112:                l = snprintf(fpath, sizeof(fpath), "%s/%s", wdir, dp->d_name);
        !           113:                if (l == -1 || l >= (int)sizeof(fpath))
        !           114:                        fatal("cvs_repository_getdir: overflow");
        !           115:
        !           116:                /*
        !           117:                 * Anticipate the file type for sorting, we do not determine
        !           118:                 * the final file type until we have the fd floating around.
        !           119:                 */
        !           120:                if (dp->d_type == DT_DIR) {
        !           121:                        cvs_file_get(fpath, dl);
        !           122:                } else if (dp->d_type == DT_REG) {
        !           123:                        if ((s = strrchr(fpath, ',')) != NULL)
        !           124:                                *s = '\0';
        !           125:                        cvs_file_get(fpath, fl);
        !           126:                }
        !           127:        }
        !           128:
        !           129:        (void)closedir(dirp);
        !           130: }