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Commit | Line | Data |
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39345a21 FBH |
1 | /* |
2 | * Copyright (c) 2006 Franck Bui-Huu | |
3 | */ | |
39345a21 FBH |
4 | #include "builtin.h" |
5 | #include "archive.h" | |
c339932b | 6 | #include "path.h" |
39345a21 | 7 | #include "pkt-line.h" |
23d6d112 | 8 | #include "sideband.h" |
d1cbe1e6 | 9 | #include "repository.h" |
1bc01efe | 10 | #include "run-command.h" |
dbbcd44f | 11 | #include "strvec.h" |
39345a21 FBH |
12 | |
13 | static const char upload_archive_usage[] = | |
f6a8ef07 | 14 | "git upload-archive <repository>"; |
39345a21 | 15 | |
23d6d112 | 16 | static const char deadchild[] = |
1b1dd23f | 17 | "git upload-archive: archiver died with error"; |
39345a21 | 18 | |
7f4d0511 | 19 | #define MAX_ARGS (64) |
23d6d112 | 20 | |
1bc01efe | 21 | int cmd_upload_archive_writer(int argc, const char **argv, const char *prefix) |
39345a21 | 22 | { |
22f9b7f3 | 23 | struct strvec sent_argv = STRVEC_INIT; |
39345a21 | 24 | const char *arg_cmd = "argument "; |
39345a21 | 25 | |
619b6c17 | 26 | if (argc != 2 || !strcmp(argv[1], "-h")) |
f0c7fd49 JH |
27 | usage(upload_archive_usage); |
28 | ||
6379dd05 JK |
29 | if (!enter_repo(argv[1], 0)) |
30 | die("'%s' does not appear to be a git repository", argv[1]); | |
f0c7fd49 | 31 | |
00436bf1 JS |
32 | init_archivers(); |
33 | ||
39345a21 | 34 | /* put received options in sent_argv[] */ |
22f9b7f3 | 35 | strvec_push(&sent_argv, "git-upload-archive"); |
090fd4fe | 36 | for (;;) { |
74543a04 JK |
37 | char *buf = packet_read_line(0, NULL); |
38 | if (!buf) | |
39345a21 | 39 | break; /* got a flush */ |
d70a9eb6 | 40 | if (sent_argv.nr > MAX_ARGS) |
090fd4fe | 41 | die("Too many options (>%d)", MAX_ARGS - 1); |
39345a21 | 42 | |
59556548 | 43 | if (!starts_with(buf, arg_cmd)) |
090fd4fe | 44 | die("'argument' token or flush expected"); |
22f9b7f3 | 45 | strvec_push(&sent_argv, buf + strlen(arg_cmd)); |
39345a21 | 46 | } |
f0c7fd49 JH |
47 | |
48 | /* parse all options sent by the client */ | |
d70a9eb6 | 49 | return write_archive(sent_argv.nr, sent_argv.v, prefix, |
b612ee20 | 50 | the_repository, NULL, 1); |
23d6d112 JH |
51 | } |
52 | ||
28bea9e5 | 53 | __attribute__((format (printf, 1, 2))) |
d3788e19 JH |
54 | static void error_clnt(const char *fmt, ...) |
55 | { | |
0cb9d6d6 | 56 | struct strbuf buf = STRBUF_INIT; |
d3788e19 | 57 | va_list params; |
d3788e19 JH |
58 | |
59 | va_start(params, fmt); | |
0cb9d6d6 | 60 | strbuf_vaddf(&buf, fmt, params); |
d3788e19 | 61 | va_end(params); |
0cb9d6d6 JK |
62 | send_sideband(1, 3, buf.buf, buf.len, LARGE_PACKET_MAX); |
63 | die("sent error to the client: %s", buf.buf); | |
d3788e19 JH |
64 | } |
65 | ||
1b19fa46 | 66 | static ssize_t process_input(int child_fd, int band) |
d3788e19 JH |
67 | { |
68 | char buf[16384]; | |
69 | ssize_t sz = read(child_fd, buf, sizeof(buf)); | |
70 | if (sz < 0) { | |
93d26e4c | 71 | if (errno != EAGAIN && errno != EINTR) |
d3788e19 | 72 | error_clnt("read error: %s\n", strerror(errno)); |
1b19fa46 | 73 | return sz; |
d3788e19 JH |
74 | } |
75 | send_sideband(1, band, buf, sz, LARGE_PACKET_MAX); | |
1b19fa46 | 76 | return sz; |
d3788e19 JH |
77 | } |
78 | ||
23d6d112 JH |
79 | int cmd_upload_archive(int argc, const char **argv, const char *prefix) |
80 | { | |
c8a4cd55 | 81 | struct child_process writer = CHILD_PROCESS_INIT; |
1bc01efe | 82 | |
79156913 JK |
83 | BUG_ON_NON_EMPTY_PREFIX(prefix); |
84 | ||
619b6c17 JK |
85 | if (argc == 2 && !strcmp(argv[1], "-h")) |
86 | usage(upload_archive_usage); | |
87 | ||
f0c7fd49 JH |
88 | /* |
89 | * Set up sideband subprocess. | |
90 | * | |
91 | * We (parent) monitor and read from child, sending its fd#1 and fd#2 | |
92 | * multiplexed out to our fd#1. If the child dies, we tell the other | |
93 | * end over channel #3. | |
94 | */ | |
1bc01efe JK |
95 | writer.out = writer.err = -1; |
96 | writer.git_cmd = 1; | |
c8a4cd55 ÆAB |
97 | strvec_push(&writer.args, "upload-archive--writer"); |
98 | strvec_pushv(&writer.args, argv + 1); | |
1bc01efe | 99 | if (start_command(&writer)) { |
23d6d112 | 100 | int err = errno; |
81c634e9 | 101 | packet_write_fmt(1, "NACK unable to spawn subprocess\n"); |
23d6d112 JH |
102 | die("upload-archive: %s", strerror(err)); |
103 | } | |
23d6d112 | 104 | |
81c634e9 | 105 | packet_write_fmt(1, "ACK\n"); |
39345a21 FBH |
106 | packet_flush(1); |
107 | ||
23d6d112 JH |
108 | while (1) { |
109 | struct pollfd pfd[2]; | |
23d6d112 | 110 | |
1bc01efe | 111 | pfd[0].fd = writer.out; |
23d6d112 | 112 | pfd[0].events = POLLIN; |
1bc01efe | 113 | pfd[1].fd = writer.err; |
23d6d112 JH |
114 | pfd[1].events = POLLIN; |
115 | if (poll(pfd, 2, -1) < 0) { | |
116 | if (errno != EINTR) { | |
17bef17e | 117 | error_errno("poll failed resuming"); |
23d6d112 JH |
118 | sleep(1); |
119 | } | |
120 | continue; | |
121 | } | |
d3788e19 | 122 | if (pfd[1].revents & POLLIN) |
23d6d112 | 123 | /* Status stream ready */ |
6b59f51b NP |
124 | if (process_input(pfd[1].fd, 2)) |
125 | continue; | |
126 | if (pfd[0].revents & POLLIN) | |
127 | /* Data stream ready */ | |
128 | if (process_input(pfd[0].fd, 1)) | |
129 | continue; | |
d3788e19 | 130 | |
1bc01efe | 131 | if (finish_command(&writer)) |
d3788e19 | 132 | error_clnt("%s", deadchild); |
23d6d112 JH |
133 | packet_flush(1); |
134 | break; | |
135 | } | |
136 | return 0; | |
137 | } |