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authorDenis Vlasenko2008-02-16 13:20:56 +0000
committerDenis Vlasenko2008-02-16 13:20:56 +0000
commit3718832a1542f7bf786a1678741b8566ad3a35c6 (patch)
treeac5851de53237fb3a0c77c9cead27acd279897f0 /networking/ifupdown.c
parent1e18f1bab3400246129756a35bb5752ba98f4c90 (diff)
downloadbusybox-3718832a1542f7bf786a1678741b8566ad3a35c6.zip
busybox-3718832a1542f7bf786a1678741b8566ad3a35c6.tar.gz
*: more readable handling of pipe fds. No code changes.
Diffstat (limited to 'networking/ifupdown.c')
-rw-r--r--networking/ifupdown.c22
1 files changed, 11 insertions, 11 deletions
diff --git a/networking/ifupdown.c b/networking/ifupdown.c
index d0d7bfe..58e6953 100644
--- a/networking/ifupdown.c
+++ b/networking/ifupdown.c
@@ -987,11 +987,11 @@ static int iface_down(struct interface_defn_t *iface)
static int popen2(FILE **in, FILE **out, char *command, char *param)
{
char *argv[3] = { command, param, NULL };
- int infd[2], outfd[2];
+ struct fd_pair infd, outfd;
pid_t pid;
- xpipe(infd);
- xpipe(outfd);
+ xpiped_pair(infd);
+ xpiped_pair(outfd);
fflush(NULL);
pid = fork();
@@ -1001,18 +1001,18 @@ static int popen2(FILE **in, FILE **out, char *command, char *param)
bb_perror_msg_and_die("fork");
case 0: /* child */
/* NB: close _first_, then move fds! */
- close(infd[1]);
- close(outfd[0]);
- xmove_fd(infd[0], 0);
- xmove_fd(outfd[1], 1);
+ close(infd.wr);
+ close(outfd.rd);
+ xmove_fd(infd.rd, 0);
+ xmove_fd(outfd.wr, 1);
BB_EXECVP(command, argv);
_exit(127);
}
/* parent */
- close(infd[0]);
- close(outfd[1]);
- *in = fdopen(infd[1], "w");
- *out = fdopen(outfd[0], "r");
+ close(infd.rd);
+ close(outfd.wr);
+ *in = fdopen(infd.wr, "w");
+ *out = fdopen(outfd.rd, "r");
return pid;
}