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tar,rpm2cpio: check that child decompressor did not error out

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function                                             old     new   delta
check_errors_in_children                               -      57     +57
tar_main                                             833     848     +15
get_header_tar                                      1720    1733     +13
rpm2cpio_main                                        147     140      -7
handle_SIGCHLD                                        41       -     -41
------------------------------------------------------------------------------
(add/remove: 1/1 grow/shrink: 2/1 up/down: 85/-48)             Total: 37 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Denys Vlasenko
2012-03-06 16:33:42 +01:00
parent 02c3c38420
commit faac1d3e6e
4 changed files with 41 additions and 59 deletions
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35
archival/rpm2cpio.c
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@@ -42,26 +42,6 @@ static unsigned skip_header(void)
return sizeof(header) + len;
}
#if SEAMLESS_COMPRESSION
static void handle_SIGCHLD(int signo UNUSED_PARAM)
{
int status;
/* Wait for any child without blocking */
for (;;) {
if (wait_any_nohang(&status) < 0)
/* wait failed?! I'm confused... */
return;
if (WIFEXITED(status) && WEXITSTATUS(status) == 0)
/* this child exited with 0 */
continue;
/* Cannot happen?
if (!WIFSIGNALED(status) && !WIFEXITED(status)) ???; */
bb_got_signal = 1;
}
}
#endif
/* No getopt required */
int rpm2cpio_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
int rpm2cpio_main(int argc UNUSED_PARAM, char **argv)
@@ -86,10 +66,9 @@ int rpm2cpio_main(int argc UNUSED_PARAM, char **argv)
/* Skip the main header */
skip_header();
#if SEAMLESS_COMPRESSION
/* We need to know whether child (gzip/bzip/etc) exits abnormally */
signal(SIGCHLD, handle_SIGCHLD);
#endif
//if (SEAMLESS_COMPRESSION)
// /* We need to know whether child (gzip/bzip/etc) exits abnormally */
// signal(SIGCHLD, check_errors_in_children);
/* This works, but doesn't report uncompress errors (they happen in child) */
setup_unzip_on_fd(rpm_fd, /*fail_if_not_detected:*/ 1);
@@ -100,9 +79,9 @@ int rpm2cpio_main(int argc UNUSED_PARAM, char **argv)
close(rpm_fd);
}
#if SEAMLESS_COMPRESSION
return bb_got_signal;
#else
if (SEAMLESS_COMPRESSION) {
check_errors_in_children(0);
return bb_got_signal;
}
return EXIT_SUCCESS;
#endif
}