diff options
Diffstat (limited to 'ui-snapshot.c')
-rw-r--r-- | ui-snapshot.c | 35 |
1 files changed, 7 insertions, 28 deletions
diff --git a/ui-snapshot.c b/ui-snapshot.c index 5372f5d..4136b3e 100644 --- a/ui-snapshot.c +++ b/ui-snapshot.c | |||
@@ -12,37 +12,16 @@ | |||
12 | 12 | ||
13 | static int write_compressed_tar_archive(struct archiver_args *args,const char *filter) | 13 | static int write_compressed_tar_archive(struct archiver_args *args,const char *filter) |
14 | { | 14 | { |
15 | int rw[2]; | ||
16 | pid_t gzpid; | ||
17 | int stdout2; | ||
18 | int status; | ||
19 | int rv; | 15 | int rv; |
16 | struct cgit_filter f; | ||
20 | 17 | ||
21 | stdout2 = chk_non_negative(dup(STDIN_FILENO), "Preserving STDOUT before compressing"); | 18 | f.cmd = xstrdup(filter); |
22 | chk_zero(pipe(rw), "Opening pipe from compressor subprocess"); | 19 | f.argv = malloc(2 * sizeof(char *)); |
23 | gzpid = chk_non_negative(fork(), "Forking compressor subprocess"); | 20 | f.argv[0] = f.cmd; |
24 | if(gzpid==0) { | 21 | f.argv[1] = NULL; |
25 | /* child */ | 22 | cgit_open_filter(&f); |
26 | chk_zero(close(rw[1]), "Closing write end of pipe in child"); | ||
27 | chk_zero(close(STDIN_FILENO), "Closing STDIN"); | ||
28 | chk_non_negative(dup2(rw[0],STDIN_FILENO), "Redirecting compressor input to stdin"); | ||
29 | execlp(filter,filter,NULL); | ||
30 | _exit(-1); | ||
31 | } | ||
32 | /* parent */ | ||
33 | chk_zero(close(rw[0]), "Closing read end of pipe"); | ||
34 | chk_non_negative(dup2(rw[1],STDOUT_FILENO), "Redirecting output to compressor"); | ||
35 | |||
36 | rv = write_tar_archive(args); | 23 | rv = write_tar_archive(args); |
37 | 24 | cgit_close_filter(&f); | |
38 | chk_zero(close(STDOUT_FILENO), "Closing STDOUT redirected to compressor"); | ||
39 | chk_non_negative(dup2(stdout2,STDOUT_FILENO), "Restoring uncompressed STDOUT"); | ||
40 | chk_zero(close(stdout2), "Closing uncompressed STDOUT"); | ||
41 | chk_zero(close(rw[1]), "Closing write end of pipe in parent"); | ||
42 | chk_positive(waitpid(gzpid,&status,0), "Waiting on compressor process"); | ||
43 | if(! ( WIFEXITED(status) && WEXITSTATUS(status)==0 ) ) | ||
44 | cgit_print_error("Failed to compress archive"); | ||
45 | |||
46 | return rv; | 25 | return rv; |
47 | } | 26 | } |
48 | 27 | ||