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filter: pipe_fh should be local

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Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
This commit is contained in:
Jason A. Donenfeld 2017-10-14 16:13:07 +02:00
parent 9d751e7eec
commit fd069b4ca0
2 changed files with 7 additions and 7 deletions
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1
cgit.h
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@ -71,7 +71,6 @@ struct cgit_exec_filter {
char *cmd; char *cmd;
char **argv; char **argv;
int old_stdout; int old_stdout;
int pipe_fh[2];
int pid; int pid;
}; };

13
filter.c
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@ -42,6 +42,7 @@ void cgit_cleanup_filters(void)
static int open_exec_filter(struct cgit_filter *base, va_list ap) static int open_exec_filter(struct cgit_filter *base, va_list ap)
{ {
struct cgit_exec_filter *filter = (struct cgit_exec_filter *)base; struct cgit_exec_filter *filter = (struct cgit_exec_filter *)base;
int pipe_fh[2];
int i; int i;
for (i = 0; i < filter->base.argument_count; i++) for (i = 0; i < filter->base.argument_count; i++)
@ -49,19 +50,19 @@ static int open_exec_filter(struct cgit_filter *base, va_list ap)
filter->old_stdout = chk_positive(dup(STDOUT_FILENO), filter->old_stdout = chk_positive(dup(STDOUT_FILENO),
"Unable to duplicate STDOUT"); "Unable to duplicate STDOUT");
chk_zero(pipe(filter->pipe_fh), "Unable to create pipe to subprocess"); chk_zero(pipe(pipe_fh), "Unable to create pipe to subprocess");
filter->pid = chk_non_negative(fork(), "Unable to create subprocess"); filter->pid = chk_non_negative(fork(), "Unable to create subprocess");
if (filter->pid == 0) { if (filter->pid == 0) {
close(filter->pipe_fh[1]); close(pipe_fh[1]);
chk_non_negative(dup2(filter->pipe_fh[0], STDIN_FILENO), chk_non_negative(dup2(pipe_fh[0], STDIN_FILENO),
"Unable to use pipe as STDIN"); "Unable to use pipe as STDIN");
execvp(filter->cmd, filter->argv); execvp(filter->cmd, filter->argv);
die_errno("Unable to exec subprocess %s", filter->cmd); die_errno("Unable to exec subprocess %s", filter->cmd);
} }
close(filter->pipe_fh[0]); close(pipe_fh[0]);
chk_non_negative(dup2(filter->pipe_fh[1], STDOUT_FILENO), chk_non_negative(dup2(pipe_fh[1], STDOUT_FILENO),
"Unable to use pipe as STDOUT"); "Unable to use pipe as STDOUT");
close(filter->pipe_fh[1]); close(pipe_fh[1]);
return 0; return 0;
} }