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

1.1     ! jfb         1: /*     $OpenBSD$       */
        !             2: /*
        !             3:  * Copyright (c) 2004 Jean-Francois Brousseau <jfb@openbsd.org>
        !             4:  * All rights reserved.
        !             5:  *
        !             6:  * Redistribution and use in source and binary forms, with or without
        !             7:  * modification, are permitted provided that the following conditions
        !             8:  * are met:
        !             9:  *
        !            10:  * 1. Redistributions of source code must retain the above copyright
        !            11:  *    notice, this list of conditions and the following disclaimer.
        !            12:  * 2. The name of the author may not be used to endorse or promote products
        !            13:  *    derived from this software without specific prior written permission.
        !            14:  *
        !            15:  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
        !            16:  * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
        !            17:  * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
        !            18:  * THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
        !            19:  * EXEMPLARY, OR CONSEQUENTIAL  DAMAGES (INCLUDING, BUT NOT LIMITED TO,
        !            20:  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
        !            21:  * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
        !            22:  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
        !            23:  * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
        !            24:  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
        !            25:  */
        !            26:
        !            27: #include <sys/types.h>
        !            28: #include <sys/stat.h>
        !            29:
        !            30: #include <errno.h>
        !            31: #include <stdio.h>
        !            32: #include <fcntl.h>
        !            33: #include <stdlib.h>
        !            34: #include <unistd.h>
        !            35: #include <string.h>
        !            36: #include <sysexits.h>
        !            37:
        !            38: #include "cvs.h"
        !            39: #include "log.h"
        !            40:
        !            41:
        !            42:
        !            43:
        !            44: static char*  cvs_commit_openmsg   (const char *);
        !            45:
        !            46:
        !            47:
        !            48:
        !            49: /*
        !            50:  * cvs_commit()
        !            51:  *
        !            52:  * Handler for the `cvs commit' command.
        !            53:  */
        !            54:
        !            55: int
        !            56: cvs_commit(int argc, char **argv)
        !            57: {
        !            58:        int ch, recurse;
        !            59:        char *msg, *mfile;
        !            60:
        !            61:        recurse = 1;
        !            62:        mfile = NULL;
        !            63:        msg = NULL;
        !            64:
        !            65:        while ((ch = getopt(argc, argv, "F:flm:R")) != -1) {
        !            66:                switch (ch) {
        !            67:                case 'F':
        !            68:                        mfile = optarg;
        !            69:                        break;
        !            70:                case 'f':
        !            71:                        recurse = 0;
        !            72:                        break;
        !            73:                case 'l':
        !            74:                        recurse = 0;
        !            75:                        break;
        !            76:                case 'm':
        !            77:                        msg = optarg;
        !            78:                        break;
        !            79:                case 'R':
        !            80:                        recurse = 1;
        !            81:                        break;
        !            82:                default:
        !            83:                        return (EX_USAGE);
        !            84:                }
        !            85:        }
        !            86:
        !            87:        if ((msg != NULL) && (mfile != NULL)) {
        !            88:                cvs_log(LP_ERR, "the -F and -m flags are mutually exclusive");
        !            89:                return (EX_USAGE);
        !            90:        }
        !            91:
        !            92:        if ((mfile != NULL) && (msg = cvs_commit_openmsg(mfile)) == NULL)
        !            93:                return (EX_DATAERR);
        !            94:
        !            95:        argc -= optind;
        !            96:        argv += optind;
        !            97:
        !            98:        return (0);
        !            99: }
        !           100:
        !           101:
        !           102: /*
        !           103:  * cvs_commit_openmsg()
        !           104:  *
        !           105:  * Open the file specified by <path> and allocate a buffer large enough to
        !           106:  * hold all of the file's contents.  The returned value must later be freed
        !           107:  * using the free() function.
        !           108:  * Returns a pointer to the allocated buffer on success, or NULL on failure.
        !           109:  */
        !           110:
        !           111: static char*
        !           112: cvs_commit_openmsg(const char *path)
        !           113: {
        !           114:        int fd;
        !           115:        size_t sz;
        !           116:        char *msg;
        !           117:        struct stat st;
        !           118:
        !           119:        if (stat(path, &st) == -1) {
        !           120:                cvs_log(LP_ERRNO, "failed to stat `%s'", path);
        !           121:                return (NULL);
        !           122:        }
        !           123:
        !           124:        sz = st.st_size + 1;
        !           125:
        !           126:        msg = (char *)malloc(sz);
        !           127:        if (msg == NULL) {
        !           128:                cvs_log(LP_ERRNO, "failed to allocate message buffer");
        !           129:                return (NULL);
        !           130:        }
        !           131:
        !           132:        fd = open(path, O_RDONLY, 0);
        !           133:        if (fd == -1) {
        !           134:                cvs_log(LP_ERRNO, "failed to open message file `%s'", path);
        !           135:                return (NULL);
        !           136:        }
        !           137:
        !           138:        if (read(fd, msg, sz - 1) == -1) {
        !           139:                cvs_log(LP_ERRNO, "failed to read CVS commit message");
        !           140:                return (NULL);
        !           141:        }
        !           142:        msg[sz - 1] = '\0';
        !           143:
        !           144:        return (msg);
        !           145: }