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authorDenis Vlasenko <vda.linux@googlemail.com>2008-02-16 13:20:56 +0000
committerDenis Vlasenko <vda.linux@googlemail.com>2008-02-16 13:20:56 +0000
commit3718832a1542f7bf786a1678741b8566ad3a35c6 (patch)
treeac5851de53237fb3a0c77c9cead27acd279897f0 /networking/udhcp
parent1e18f1bab3400246129756a35bb5752ba98f4c90 (diff)
downloadbusybox-3718832a1542f7bf786a1678741b8566ad3a35c6.tar.gz
*: more readable handling of pipe fds. No code changes.
Diffstat (limited to 'networking/udhcp')
-rw-r--r--networking/udhcp/signalpipe.c20
1 files changed, 10 insertions, 10 deletions
diff --git a/networking/udhcp/signalpipe.c b/networking/udhcp/signalpipe.c
index 845aa3a9a..918abd02d 100644
--- a/networking/udhcp/signalpipe.c
+++ b/networking/udhcp/signalpipe.c
@@ -23,12 +23,12 @@
#include "common.h"
-static int signal_pipe[2];
+static struct fd_pair signal_pipe;
static void signal_handler(int sig)
{
unsigned char ch = sig; /* use char, avoid dealing with partial writes */
- if (write(signal_pipe[1], &ch, 1) != 1)
+ if (write(signal_pipe.wr, &ch, 1) != 1)
bb_perror_msg("cannot send signal");
}
@@ -38,10 +38,10 @@ static void signal_handler(int sig)
void udhcp_sp_setup(void)
{
/* was socketpair, but it needs AF_UNIX in kernel */
- xpipe(signal_pipe);
- close_on_exec_on(signal_pipe[0]);
- close_on_exec_on(signal_pipe[1]);
- ndelay_on(signal_pipe[1]);
+ xpiped_pair(signal_pipe);
+ close_on_exec_on(signal_pipe.rd);
+ close_on_exec_on(signal_pipe.wr);
+ ndelay_on(signal_pipe.wr);
signal(SIGUSR1, signal_handler);
signal(SIGUSR2, signal_handler);
signal(SIGTERM, signal_handler);
@@ -54,12 +54,12 @@ void udhcp_sp_setup(void)
int udhcp_sp_fd_set(fd_set *rfds, int extra_fd)
{
FD_ZERO(rfds);
- FD_SET(signal_pipe[0], rfds);
+ FD_SET(signal_pipe.rd, rfds);
if (extra_fd >= 0) {
close_on_exec_on(extra_fd);
FD_SET(extra_fd, rfds);
}
- return signal_pipe[0] > extra_fd ? signal_pipe[0] : extra_fd;
+ return signal_pipe.rd > extra_fd ? signal_pipe.rd : extra_fd;
}
@@ -70,10 +70,10 @@ int udhcp_sp_read(const fd_set *rfds)
{
unsigned char sig;
- if (!FD_ISSET(signal_pipe[0], rfds))
+ if (!FD_ISSET(signal_pipe.rd, rfds))
return 0;
- if (read(signal_pipe[0], &sig, 1) != 1)
+ if (safe_read(signal_pipe.rd, &sig, 1) != 1)
return -1;
return sig;