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[package] uhttpd: block SIGCHLD until it is expected (#6957)

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git-svn-id: svn://svn.openwrt.org/openwrt/trunk@20513 3c298f89-4303-0410-b956-a3cf2f4a3e73
This commit is contained in:
jow 2010-03-27 14:31:35 +00:00
parent f52ddee30b
commit f5b350a276
6 changed files with 33 additions and 4 deletions
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2
package/uhttpd/Makefile
View File

@ -8,7 +8,7 @@
include $(TOPDIR)/rules.mk include $(TOPDIR)/rules.mk
PKG_NAME:=uhttpd PKG_NAME:=uhttpd
PKG_RELEASE:=3 PKG_RELEASE:=4
PKG_BUILD_DIR := $(BUILD_DIR)/$(PKG_NAME) PKG_BUILD_DIR := $(BUILD_DIR)/$(PKG_NAME)

2
package/uhttpd/src/uhttpd-cgi.c
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@ -376,7 +376,7 @@ void uh_cgi_request(struct client *cl, struct http_request *req, struct path_inf
FD_SET(wfd[1], &writer); FD_SET(wfd[1], &writer);
/* wait until we can read or write or both */ /* wait until we can read or write or both */
if( select(fd_max, &reader, if( select_intr(fd_max, &reader,
(content_length > -1) ? &writer : NULL, NULL, (content_length > -1) ? &writer : NULL, NULL,
(header_sent < 1) ? &timeout : NULL) > 0 (header_sent < 1) ? &timeout : NULL) > 0
) { ) {

2
package/uhttpd/src/uhttpd-lua.c
View File

@ -452,7 +452,7 @@ void uh_lua_request(struct client *cl, struct http_request *req, lua_State *L)
FD_SET(wfd[1], &writer); FD_SET(wfd[1], &writer);
/* wait until we can read or write or both */ /* wait until we can read or write or both */
if( select(fd_max, &reader, if( select_intr(fd_max, &reader,
(content_length > -1) ? &writer : NULL, NULL, (content_length > -1) ? &writer : NULL, NULL,
(data_sent < 1) ? &timeout : NULL) > 0 (data_sent < 1) ? &timeout : NULL) > 0
) { ) {

19
package/uhttpd/src/uhttpd-utils.c
View File

@ -88,6 +88,25 @@ char *strfind(char *haystack, int hslen, const char *needle, int ndlen)
return NULL; return NULL;
} }
/* interruptable select() */
int select_intr(int n, fd_set *r, fd_set *w, fd_set *e, struct timeval *t)
{
int rv;
sigset_t ssn, sso;
/* unblock SIGCHLD */
sigemptyset(&ssn);
sigaddset(&ssn, SIGCHLD);
sigprocmask(SIG_UNBLOCK, &ssn, &sso);
rv = select(n, r, w, e, t);
/* restore signal mask */
sigprocmask(SIG_SETMASK, &sso, NULL);
return rv;
}
int uh_tcp_send(struct client *cl, const char *buf, int len) int uh_tcp_send(struct client *cl, const char *buf, int len)
{ {

2
package/uhttpd/src/uhttpd-utils.h
View File

@ -52,6 +52,8 @@ int sa_port(void *sa);
char *strfind(char *haystack, int hslen, const char *needle, int ndlen); char *strfind(char *haystack, int hslen, const char *needle, int ndlen);
int select_intr(int n, fd_set *r, fd_set *w, fd_set *e, struct timeval *t);
int uh_tcp_send(struct client *cl, const char *buf, int len); int uh_tcp_send(struct client *cl, const char *buf, int len);
int uh_tcp_peek(struct client *cl, char *buf, int len); int uh_tcp_peek(struct client *cl, char *buf, int len);
int uh_tcp_recv(struct client *cl, char *buf, int len); int uh_tcp_recv(struct client *cl, char *buf, int len);

10
package/uhttpd/src/uhttpd.c
View File

@ -410,6 +410,9 @@ int main (int argc, char **argv)
struct sigaction sa; struct sigaction sa;
struct config conf; struct config conf;
/* signal mask */
sigset_t ss;
/* maximum file descriptor number */ /* maximum file descriptor number */
int new_fd, cur_fd, max_fd = 0; int new_fd, cur_fd, max_fd = 0;
@ -432,7 +435,7 @@ int main (int argc, char **argv)
FD_ZERO(&serv_fds); FD_ZERO(&serv_fds);
FD_ZERO(&read_fds); FD_ZERO(&read_fds);
/* handle SIGPIPE, SIGCHILD */ /* handle SIGPIPE, SIGINT, SIGTERM, SIGCHLD */
sa.sa_flags = 0; sa.sa_flags = 0;
sigemptyset(&sa.sa_mask); sigemptyset(&sa.sa_mask);
@ -446,6 +449,11 @@ int main (int argc, char **argv)
sigaction(SIGINT, &sa, NULL); sigaction(SIGINT, &sa, NULL);
sigaction(SIGTERM, &sa, NULL); sigaction(SIGTERM, &sa, NULL);
/* defer SIGCHLD */
sigemptyset(&ss);
sigaddset(&ss, SIGCHLD);
sigprocmask(SIG_BLOCK, &ss, NULL);
/* prepare addrinfo hints */ /* prepare addrinfo hints */
memset(&hints, 0, sizeof(hints)); memset(&hints, 0, sizeof(hints));
hints.ai_family = AF_UNSPEC; hints.ai_family = AF_UNSPEC;