| Junio C Hamano | ad89721 | 2005-12-15 06:17:38 | [diff] [blame] | 1 | #include "cache.h" |
| 2 | #include <sys/wait.h> |
| 3 | |
| 4 | static int finish_pack(const char *pack_tmp_name, const char *me) |
| 5 | { |
| 6 | int pipe_fd[2]; |
| 7 | pid_t pid; |
| 8 | char idx[PATH_MAX]; |
| 9 | char final[PATH_MAX]; |
| 10 | char hash[41]; |
| 11 | unsigned char sha1[20]; |
| 12 | char *cp; |
| 13 | int err = 0; |
| 14 | |
| 15 | if (pipe(pipe_fd) < 0) |
| 16 | die("%s: unable to set up pipe", me); |
| 17 | |
| 18 | strcpy(idx, pack_tmp_name); /* ".git/objects/pack-XXXXXX" */ |
| 19 | cp = strrchr(idx, '/'); |
| 20 | memcpy(cp, "/pidx", 5); |
| 21 | |
| 22 | pid = fork(); |
| 23 | if (pid < 0) |
| 24 | die("git-clone-pack: unable to fork off git-index-pack"); |
| 25 | if (!pid) { |
| 26 | close(0); |
| 27 | dup2(pipe_fd[1], 1); |
| 28 | close(pipe_fd[0]); |
| 29 | close(pipe_fd[1]); |
| 30 | execlp("git-index-pack","git-index-pack", |
| 31 | "-o", idx, pack_tmp_name, NULL); |
| 32 | error("cannot exec git-index-pack <%s> <%s>", |
| 33 | idx, pack_tmp_name); |
| 34 | exit(1); |
| 35 | } |
| 36 | close(pipe_fd[1]); |
| 37 | if (read(pipe_fd[0], hash, 40) != 40) { |
| 38 | error("%s: unable to read from git-index-pack", me); |
| 39 | err = 1; |
| 40 | } |
| 41 | close(pipe_fd[0]); |
| 42 | |
| 43 | for (;;) { |
| 44 | int status, code; |
| 45 | int retval = waitpid(pid, &status, 0); |
| 46 | |
| 47 | if (retval < 0) { |
| 48 | if (errno == EINTR) |
| 49 | continue; |
| 50 | error("waitpid failed (%s)", strerror(retval)); |
| 51 | goto error_die; |
| 52 | } |
| 53 | if (WIFSIGNALED(status)) { |
| 54 | int sig = WTERMSIG(status); |
| 55 | error("git-index-pack died of signal %d", sig); |
| 56 | goto error_die; |
| 57 | } |
| 58 | if (!WIFEXITED(status)) { |
| 59 | error("git-index-pack died of unnatural causes %d", |
| 60 | status); |
| 61 | goto error_die; |
| 62 | } |
| 63 | code = WEXITSTATUS(status); |
| 64 | if (code) { |
| 65 | error("git-index-pack died with error code %d", code); |
| 66 | goto error_die; |
| 67 | } |
| 68 | if (err) |
| 69 | goto error_die; |
| 70 | break; |
| 71 | } |
| 72 | hash[40] = 0; |
| 73 | if (get_sha1_hex(hash, sha1)) { |
| 74 | error("git-index-pack reported nonsense '%s'", hash); |
| 75 | goto error_die; |
| 76 | } |
| 77 | /* Now we have pack in pack_tmp_name[], and |
| 78 | * idx in idx[]; rename them to their final names. |
| 79 | */ |
| 80 | snprintf(final, sizeof(final), |
| 81 | "%s/pack/pack-%s.pack", get_object_directory(), hash); |
| 82 | move_temp_to_file(pack_tmp_name, final); |
| 83 | chmod(final, 0444); |
| 84 | snprintf(final, sizeof(final), |
| 85 | "%s/pack/pack-%s.idx", get_object_directory(), hash); |
| 86 | move_temp_to_file(idx, final); |
| 87 | chmod(final, 0444); |
| 88 | return 0; |
| 89 | |
| 90 | error_die: |
| 91 | unlink(idx); |
| 92 | unlink(pack_tmp_name); |
| 93 | exit(1); |
| 94 | } |
| 95 | |
| 96 | int receive_unpack_pack(int fd[2], const char *me, int quiet) |
| 97 | { |
| 98 | int status; |
| 99 | pid_t pid; |
| 100 | |
| 101 | pid = fork(); |
| 102 | if (pid < 0) |
| 103 | die("%s: unable to fork off git-unpack-objects", me); |
| 104 | if (!pid) { |
| 105 | dup2(fd[0], 0); |
| 106 | close(fd[0]); |
| 107 | close(fd[1]); |
| 108 | execlp("git-unpack-objects", "git-unpack-objects", |
| 109 | quiet ? "-q" : NULL, NULL); |
| 110 | die("git-unpack-objects exec failed"); |
| 111 | } |
| 112 | close(fd[0]); |
| 113 | close(fd[1]); |
| 114 | while (waitpid(pid, &status, 0) < 0) { |
| 115 | if (errno != EINTR) |
| 116 | die("waiting for git-unpack-objects: %s", |
| 117 | strerror(errno)); |
| 118 | } |
| 119 | if (WIFEXITED(status)) { |
| 120 | int code = WEXITSTATUS(status); |
| 121 | if (code) |
| 122 | die("git-unpack-objects died with error code %d", |
| 123 | code); |
| 124 | return 0; |
| 125 | } |
| 126 | if (WIFSIGNALED(status)) { |
| 127 | int sig = WTERMSIG(status); |
| 128 | die("git-unpack-objects died of signal %d", sig); |
| 129 | } |
| 130 | die("git-unpack-objects died of unnatural causes %d", status); |
| 131 | } |
| 132 | |
| 133 | int receive_keep_pack(int fd[2], const char *me) |
| 134 | { |
| 135 | char tmpfile[PATH_MAX]; |
| 136 | int ofd, ifd; |
| 137 | |
| 138 | ifd = fd[0]; |
| 139 | snprintf(tmpfile, sizeof(tmpfile), |
| 140 | "%s/pack/tmp-XXXXXX", get_object_directory()); |
| 141 | ofd = mkstemp(tmpfile); |
| 142 | if (ofd < 0) |
| 143 | return error("unable to create temporary file %s", tmpfile); |
| 144 | |
| 145 | while (1) { |
| 146 | char buf[8192]; |
| 147 | ssize_t sz, wsz, pos; |
| 148 | sz = read(ifd, buf, sizeof(buf)); |
| 149 | if (sz == 0) |
| 150 | break; |
| 151 | if (sz < 0) { |
| 152 | error("error reading pack (%s)", strerror(errno)); |
| 153 | close(ofd); |
| 154 | unlink(tmpfile); |
| 155 | return -1; |
| 156 | } |
| 157 | pos = 0; |
| 158 | while (pos < sz) { |
| 159 | wsz = write(ofd, buf + pos, sz - pos); |
| 160 | if (wsz < 0) { |
| 161 | error("error writing pack (%s)", |
| 162 | strerror(errno)); |
| 163 | close(ofd); |
| 164 | unlink(tmpfile); |
| 165 | return -1; |
| 166 | } |
| 167 | pos += wsz; |
| 168 | } |
| 169 | } |
| 170 | close(ofd); |
| 171 | return finish_pack(tmpfile, me); |
| 172 | } |
