mirror of
https://github.com/git/git.git
synced 2024-11-24 10:26:17 +08:00
6ffaecc7d8
Playing with linker games to shrink git-shell did not go well with various other platforms and compilers. Signed-off-by: Junio C Hamano <gitster@pobox.com>
103 lines
2.2 KiB
C
103 lines
2.2 KiB
C
#include "cache.h"
|
|
#include "quote.h"
|
|
#include "exec_cmd.h"
|
|
#include "strbuf.h"
|
|
|
|
static int do_generic_cmd(const char *me, char *arg)
|
|
{
|
|
const char *my_argv[4];
|
|
|
|
setup_path();
|
|
if (!arg || !(arg = sq_dequote(arg)))
|
|
die("bad argument");
|
|
if (prefixcmp(me, "git-"))
|
|
die("bad command");
|
|
|
|
my_argv[0] = me + 4;
|
|
my_argv[1] = arg;
|
|
my_argv[2] = NULL;
|
|
|
|
return execv_git_cmd(my_argv);
|
|
}
|
|
|
|
static int do_cvs_cmd(const char *me, char *arg)
|
|
{
|
|
const char *cvsserver_argv[3] = {
|
|
"cvsserver", "server", NULL
|
|
};
|
|
|
|
if (!arg || strcmp(arg, "server"))
|
|
die("git-cvsserver only handles server: %s", arg);
|
|
|
|
setup_path();
|
|
return execv_git_cmd(cvsserver_argv);
|
|
}
|
|
|
|
|
|
static struct commands {
|
|
const char *name;
|
|
int (*exec)(const char *me, char *arg);
|
|
} cmd_list[] = {
|
|
{ "git-receive-pack", do_generic_cmd },
|
|
{ "git-upload-pack", do_generic_cmd },
|
|
{ "cvs", do_cvs_cmd },
|
|
{ NULL },
|
|
};
|
|
|
|
int main(int argc, char **argv)
|
|
{
|
|
char *prog;
|
|
struct commands *cmd;
|
|
int devnull_fd;
|
|
|
|
/*
|
|
* Always open file descriptors 0/1/2 to avoid clobbering files
|
|
* in die(). It also avoids not messing up when the pipes are
|
|
* dup'ed onto stdin/stdout/stderr in the child processes we spawn.
|
|
*/
|
|
devnull_fd = open("/dev/null", O_RDWR);
|
|
while (devnull_fd >= 0 && devnull_fd <= 2)
|
|
devnull_fd = dup(devnull_fd);
|
|
if (devnull_fd == -1)
|
|
die("opening /dev/null failed (%s)", strerror(errno));
|
|
close (devnull_fd);
|
|
|
|
/*
|
|
* Special hack to pretend to be a CVS server
|
|
*/
|
|
if (argc == 2 && !strcmp(argv[1], "cvs server"))
|
|
argv--;
|
|
|
|
/*
|
|
* We do not accept anything but "-c" followed by "cmd arg",
|
|
* where "cmd" is a very limited subset of git commands.
|
|
*/
|
|
else if (argc != 3 || strcmp(argv[1], "-c"))
|
|
die("What do you think I am? A shell?");
|
|
|
|
prog = argv[2];
|
|
if (!strncmp(prog, "git", 3) && isspace(prog[3]))
|
|
/* Accept "git foo" as if the caller said "git-foo". */
|
|
prog[3] = '-';
|
|
|
|
for (cmd = cmd_list ; cmd->name ; cmd++) {
|
|
int len = strlen(cmd->name);
|
|
char *arg;
|
|
if (strncmp(cmd->name, prog, len))
|
|
continue;
|
|
arg = NULL;
|
|
switch (prog[len]) {
|
|
case '\0':
|
|
arg = NULL;
|
|
break;
|
|
case ' ':
|
|
arg = prog + len + 1;
|
|
break;
|
|
default:
|
|
continue;
|
|
}
|
|
exit(cmd->exec(cmd->name, arg));
|
|
}
|
|
die("unrecognized command '%s'", prog);
|
|
}
|