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authorDenys Vlasenko2012-03-06 16:33:42 +0100
committerDenys Vlasenko2012-03-06 16:33:42 +0100
commitfaac1d3e6e87dc6882e69b62f1c71907d892c876 (patch)
treec9feb257a4d47e71a5555360b0978e22c9e37dbf /archival/libarchive/open_transformer.c
parent02c3c3842004d88207b46450dbd19f80e6596c7e (diff)
downloadbusybox-faac1d3e6e87dc6882e69b62f1c71907d892c876.zip
busybox-faac1d3e6e87dc6882e69b62f1c71907d892c876.tar.gz
tar,rpm2cpio: check that child decompressor did not error out
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>
Diffstat (limited to 'archival/libarchive/open_transformer.c')
-rw-r--r--archival/libarchive/open_transformer.c26
1 files changed, 26 insertions, 0 deletions
diff --git a/archival/libarchive/open_transformer.c b/archival/libarchive/open_transformer.c
index 693ae99..dae04aa 100644
--- a/archival/libarchive/open_transformer.c
+++ b/archival/libarchive/open_transformer.c
@@ -27,6 +27,32 @@ int FAST_FUNC check_signature16(transformer_aux_data_t *aux, int src_fd, unsigne
return 0;
}
+void check_errors_in_children(int signo)
+{
+ int status;
+
+ if (!signo) {
+ /* block waiting for any child */
+ if (wait(&status) < 0)
+ return; /* probably there are no children */
+ goto check_status;
+ }
+
+ /* Wait for any child without blocking */
+ for (;;) {
+ if (wait_any_nohang(&status) < 0)
+ /* wait failed?! I'm confused... */
+ return;
+ check_status:
+ if (WIFEXITED(status) && WEXITSTATUS(status) == 0)
+ /* this child exited with 0 */
+ continue;
+ /* Cannot happen?
+ if (!WIFSIGNALED(status) && !WIFEXITED(status)) ???; */
+ bb_got_signal = 1;
+ }
+}
+
/* transformer(), more than meets the eye */
#if BB_MMU
void FAST_FUNC open_transformer(int fd,