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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-03-09 13:19:48 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-03-09 13:20:02 +0000 |
commit | 58daab21cd043e1dc37024a7f99b396788372918 (patch) | |
tree | 96771e43bb69f7c1c2b0b4f7374cb74d7866d0cb /web/server/h2o/libh2o/deps/cloexec/cloexec.c | |
parent | Releasing debian version 1.43.2-1. (diff) | |
download | netdata-58daab21cd043e1dc37024a7f99b396788372918.tar.xz netdata-58daab21cd043e1dc37024a7f99b396788372918.zip |
Merging upstream version 1.44.3.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'web/server/h2o/libh2o/deps/cloexec/cloexec.c')
-rw-r--r-- | web/server/h2o/libh2o/deps/cloexec/cloexec.c | 93 |
1 files changed, 93 insertions, 0 deletions
diff --git a/web/server/h2o/libh2o/deps/cloexec/cloexec.c b/web/server/h2o/libh2o/deps/cloexec/cloexec.c new file mode 100644 index 000000000..bc67c3957 --- /dev/null +++ b/web/server/h2o/libh2o/deps/cloexec/cloexec.c @@ -0,0 +1,93 @@ +/* + * Copyright (c) 2015 DeNA Co., Ltd. + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to + * deal in the Software without restriction, including without limitation the + * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or + * sell copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS + * IN THE SOFTWARE. + */ +#include <fcntl.h> +#include "cloexec.h" + +pthread_mutex_t cloexec_mutex = PTHREAD_MUTEX_INITIALIZER; + +static int set_cloexec(int fd) +{ + return fcntl(fd, F_SETFD, FD_CLOEXEC) != -1 ? 0 : -1; +} + +/* + * note: the socket must be in non-blocking mode, or the call might block while the mutex is being locked + */ +int cloexec_accept(int socket, struct sockaddr *addr, socklen_t *addrlen) +{ + int fd = -1; + pthread_mutex_lock(&cloexec_mutex); + + if ((fd = accept(socket, addr, addrlen)) == -1) + goto Exit; + if (set_cloexec(fd) != 0) { + close(fd); + fd = -1; + goto Exit; + } + +Exit: + pthread_mutex_unlock(&cloexec_mutex); + return fd; +} + +int cloexec_pipe(int fds[2]) +{ +#ifdef __linux__ + return pipe2(fds, O_CLOEXEC); +#else + int ret = -1; + pthread_mutex_lock(&cloexec_mutex); + + if (pipe(fds) != 0) + goto Exit; + if (set_cloexec(fds[0]) != 0 || set_cloexec(fds[1]) != 0) + goto Exit; + ret = 0; + +Exit: + pthread_mutex_unlock(&cloexec_mutex); + return ret; +#endif +} + +int cloexec_socket(int domain, int type, int protocol) +{ +#ifdef __linux__ + return socket(domain, type | SOCK_CLOEXEC, protocol); +#else + int fd = -1; + pthread_mutex_lock(&cloexec_mutex); + + if ((fd = socket(domain, type, protocol)) == -1) + goto Exit; + if (set_cloexec(fd) != 0) { + close(fd); + fd = -1; + goto Exit; + } + +Exit: + pthread_mutex_unlock(&cloexec_mutex); + return fd; +#endif +} |