Revision 601ca9287d9ba5c34494cac3b99b25c77a5d8674 authored by Junio C Hamano on 14 January 2015, 20:36:45 UTC, committed by Junio C Hamano on 14 January 2015, 20:36:45 UTC
We try to see if "tput" gives a useful result before switching TERM to dumb and moving HOME to point to our fake location for stability of the tests, and then use the command when coloring the output from the tests, but there is no guarantee "tput" works after switching HOME. * rh/test-color-avoid-terminfo-in-original-home: test-lib.sh: do tests for color support after changing HOME test-lib: use 'test ...' instead of '[ ... ]'
unix-socket.c
#include "cache.h"
#include "unix-socket.h"
static int unix_stream_socket(void)
{
int fd = socket(AF_UNIX, SOCK_STREAM, 0);
if (fd < 0)
die_errno("unable to create socket");
return fd;
}
static int chdir_len(const char *orig, int len)
{
char *path = xmemdupz(orig, len);
int r = chdir(path);
free(path);
return r;
}
struct unix_sockaddr_context {
char *orig_dir;
};
static void unix_sockaddr_cleanup(struct unix_sockaddr_context *ctx)
{
if (!ctx->orig_dir)
return;
/*
* If we fail, we can't just return an error, since we have
* moved the cwd of the whole process, which could confuse calling
* code. We are better off to just die.
*/
if (chdir(ctx->orig_dir) < 0)
die("unable to restore original working directory");
free(ctx->orig_dir);
}
static int unix_sockaddr_init(struct sockaddr_un *sa, const char *path,
struct unix_sockaddr_context *ctx)
{
int size = strlen(path) + 1;
ctx->orig_dir = NULL;
if (size > sizeof(sa->sun_path)) {
const char *slash = find_last_dir_sep(path);
const char *dir;
struct strbuf cwd = STRBUF_INIT;
if (!slash) {
errno = ENAMETOOLONG;
return -1;
}
dir = path;
path = slash + 1;
size = strlen(path) + 1;
if (size > sizeof(sa->sun_path)) {
errno = ENAMETOOLONG;
return -1;
}
if (strbuf_getcwd(&cwd))
return -1;
ctx->orig_dir = strbuf_detach(&cwd, NULL);
if (chdir_len(dir, slash - dir) < 0)
return -1;
}
memset(sa, 0, sizeof(*sa));
sa->sun_family = AF_UNIX;
memcpy(sa->sun_path, path, size);
return 0;
}
int unix_stream_connect(const char *path)
{
int fd, saved_errno;
struct sockaddr_un sa;
struct unix_sockaddr_context ctx;
if (unix_sockaddr_init(&sa, path, &ctx) < 0)
return -1;
fd = unix_stream_socket();
if (connect(fd, (struct sockaddr *)&sa, sizeof(sa)) < 0)
goto fail;
unix_sockaddr_cleanup(&ctx);
return fd;
fail:
saved_errno = errno;
unix_sockaddr_cleanup(&ctx);
close(fd);
errno = saved_errno;
return -1;
}
int unix_stream_listen(const char *path)
{
int fd, saved_errno;
struct sockaddr_un sa;
struct unix_sockaddr_context ctx;
unlink(path);
if (unix_sockaddr_init(&sa, path, &ctx) < 0)
return -1;
fd = unix_stream_socket();
if (bind(fd, (struct sockaddr *)&sa, sizeof(sa)) < 0)
goto fail;
if (listen(fd, 5) < 0)
goto fail;
unix_sockaddr_cleanup(&ctx);
return fd;
fail:
saved_errno = errno;
unix_sockaddr_cleanup(&ctx);
close(fd);
errno = saved_errno;
return -1;
}
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