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rexecd: avoid socket/pipe/socketpair dup to new task

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Signed-off-by: dongjiuzhu1 <dongjiuzhu1@xiaomi.com>
This commit is contained in:
dongjiuzhu1 2023-10-12 13:54:31 +08:00 committed by Xiang Xiao
parent 57011d2313
commit cc66e34fbf
2 changed files with 8 additions and 4 deletions
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2
netutils/rexecd/rexecd.c
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@ -256,7 +256,7 @@ int main(int argc, FAR char **argv)
while (1)
{
sock = accept(serv, NULL, 0);
sock = accept4(serv, NULL, 0, SOCK_CLOEXEC);
if (sock < 0)
{
if (errno == EINTR)

10
system/popen/popen.c
View File

@ -33,6 +33,7 @@
#include <spawn.h>
#include <assert.h>
#include <debug.h>
#include <fcntl.h>
#include "nshlib/nshlib.h"
@ -139,7 +140,8 @@ FILE *popen(FAR const char *command, FAR const char *mode)
* Is the pipe the input to the shell? Or the output?
*/
if (strcmp(mode, "r") == 0 && (result = pipe(fd)) >= 0)
if (strcmp(mode, "r") == 0 &&
(result = pipe2(fd, O_CLOEXEC)) >= 0)
{
/* Pipe is the output from the shell */
@ -147,7 +149,8 @@ FILE *popen(FAR const char *command, FAR const char *mode)
newfd[0] = fd[1];
retfd = fd[0]; /* Use read side of the pipe to create the return stream */
}
else if (strcmp(mode, "w") == 0 && (result = pipe(fd)) >= 0)
else if (strcmp(mode, "w") == 0 &&
(result = pipe2(fd, O_CLOEXEC)) >= 0)
{
/* Pipe is the input to the shell */
@ -160,7 +163,8 @@ FILE *popen(FAR const char *command, FAR const char *mode)
#if defined(CONFIG_NET_LOCAL) && defined(CONFIG_NET_LOCAL_STREAM)
else if ((strcmp(mode, "r+") == 0 || strcmp(mode, "w+") == 0) &&
(result = socketpair(AF_UNIX, SOCK_STREAM, 0, fd)) >= 0)
(result = socketpair(AF_UNIX, SOCK_STREAM | SOCK_CLOEXEC,
0, fd)) >= 0)
{
/* Socketpair is the input/output to the shell */