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fd_util: add function socketpair_cloexec_nonblock()

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This commit is contained in:
Max Kellermann 2011-07-01 10:50:15 +02:00
parent 531c0067ec
commit 08e2e2e791
2 changed files with 30 additions and 0 deletions
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23
src/fd_util.c
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@ -206,6 +206,29 @@ socketpair_cloexec(int domain, int type, int protocol, int sv[2])
return ret; return ret;
} }
int
socketpair_cloexec_nonblock(int domain, int type, int protocol, int sv[2])
{
int ret;
#if defined(SOCK_CLOEXEC) && defined(SOCK_NONBLOCK)
ret = socketpair(domain, type | SOCK_CLOEXEC | SOCK_NONBLOCK, protocol,
sv);
if (ret >= 0 || errno != EINVAL)
return ret;
#endif
ret = socketpair(domain, type, protocol, sv);
if (ret >= 0) {
fd_set_cloexec(sv[0], true);
fd_set_nonblock(sv[0]);
fd_set_cloexec(sv[1], true);
fd_set_nonblock(sv[1]);
}
return ret;
}
#endif #endif
int int

7
src/fd_util.h
View File

@ -89,6 +89,13 @@ pipe_cloexec_nonblock(int fd[2]);
int int
socketpair_cloexec(int domain, int type, int protocol, int sv[2]); socketpair_cloexec(int domain, int type, int protocol, int sv[2]);
/**
* Wrapper for socketpair(), which sets the flags CLOEXEC and NONBLOCK
* (atomically if supported by the OS).
*/
int
socketpair_cloexec_nonblock(int domain, int type, int protocol, int sv[2]);
#endif #endif
/** /**