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-rw-r--r--ui-snapshot.c35
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
13static int write_compressed_tar_archive(struct archiver_args *args,const char *filter) 13static 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