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changed mod-sys.c to check O_CLOEXEC and O_NONBLOCK before using them

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hyung-hwan 2019-09-02 07:46:04 +00:00
parent 0931dd7b3d
commit c6522a0291
1 changed files with 5 additions and 1 deletions
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6
qse/lib/awk/mod-sys.c
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@ -661,7 +661,7 @@ static int fnc_dup (qse_awk_rtx_t* rtx, const qse_awk_fnc_info_t* fi)
#if defined(HAVE_DUP3)
fd = dup3(sys_node->ctx.u.fd, sys_node2->ctx.u.fd, oflags);
#else
fd = dup2(sys_node->ctx.u.fd);
fd = dup2(sys_node->ctx.u.fd, sys_node2->ctx.u.fd);
#endif
if (fd >= 0)
{
@ -671,8 +671,12 @@ static int fnc_dup (qse_awk_rtx_t* rtx, const qse_awk_fnc_info_t* fi)
if (oflags)
{
int nflags = 0;
#if defined(O_CLOEXEC) && defined(FD_CLOEXEC)
if (oflags & O_CLOEXEC) nflags |= FD_CLOEXEC;
#endif
#if defined(O_NONBLOCK) && defined(FD_NONBLOCK)
/*if (oflags & O_NONBLOCK) nflags |= FD_NONBLOCK; dup3() doesn't seem to support NONBLOCK. */
#endif
if (nflags) fcntl (fd, F_SETFD, nflags);
}