57 lines
1.5 KiB
C
57 lines
1.5 KiB
C
/*
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* Copyright © 2018 Collabora, Ltd.
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice (including the
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* next paragraph) shall be included in all copies or substantial
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* portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#ifndef FD_UTIL_H
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#define FD_UTIL_H
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#include <unistd.h>
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static inline void
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fd_update(int *fd, int new_fd)
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{
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if (*fd == new_fd)
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return;
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if (*fd >= 0)
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close(*fd);
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*fd = new_fd;
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}
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static inline void
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fd_move(int *dest, int *src)
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{
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if (dest == src)
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return;
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fd_update(dest, *src);
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*src = -1;
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}
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static inline void
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fd_clear(int *fd)
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{
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fd_update(fd, -1);
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}
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#endif /* FD_UTIL_H */
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