| 1 | /* Wrapper for file descriptors that refers to a process functions. |
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| 2 | Copyright (C) 2022-2024 Free Software Foundation, Inc. |
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| 3 | This file is part of the GNU C Library. |
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| 4 | |
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| 5 | The GNU C Library is free software; you can redistribute it and/or |
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| 6 | modify it under the terms of the GNU Lesser General Public |
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| 7 | License as published by the Free Software Foundation; either |
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| 8 | version 2.1 of the License, or (at your option) any later version. |
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| 9 | |
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| 10 | The GNU C Library is distributed in the hope that it will be useful, |
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| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 13 | Lesser General Public License for more details. |
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| 14 | |
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| 15 | You should have received a copy of the GNU Lesser General Public |
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| 16 | License along with the GNU C Library; if not, see |
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| 17 | <https://www.gnu.org/licenses/>. */ |
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| 18 | |
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| 19 | #ifndef _PIDFD_H |
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| 20 | |
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| 21 | #include <fcntl.h> |
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| 22 | #include <bits/types/siginfo_t.h> |
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| 23 | |
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| 24 | #define PIDFD_NONBLOCK O_NONBLOCK |
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| 25 | |
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| 26 | /* Returns a file descriptor that refers to the process PID. The |
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| 27 | close-on-exec is set on the file descriptor. |
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| 28 | |
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| 29 | The FLAGS argument is reserved for future use, it must be specified |
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| 30 | as 0. */ |
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| 31 | extern int pidfd_open (__pid_t __pid, unsigned int __flags) __THROW; |
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| 32 | |
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| 33 | /* Duplicates an existing file descriptor TARGETFD in the process referred |
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| 34 | by the PIDFD file descriptor PIDFD. |
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| 35 | |
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| 36 | The FLAGS argument is reserved for future use, it must be specified |
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| 37 | as 0. */ |
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| 38 | extern int pidfd_getfd (int __pidfd, int __targetfd, |
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| 39 | unsigned int __flags) __THROW; |
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| 40 | |
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| 41 | /* Sends the signal SIG to the target process referred by the PIDFD. If |
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| 42 | INFO points to a siginfo_t buffer, it will be populated. |
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| 43 | |
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| 44 | The FLAGS argument is reserved for future use, it must be specified |
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| 45 | as 0. */ |
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| 46 | extern int pidfd_send_signal (int __pidfd, int __sig, siginfo_t *__info, |
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| 47 | unsigned int __flags) __THROW; |
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| 48 | |
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| 49 | /* Query the process ID (PID) from process descriptor FD. Return the PID |
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| 50 | or -1 in case of an error. */ |
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| 51 | extern pid_t pidfd_getpid (int __fd) __THROW; |
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| 52 | |
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| 53 | #endif /* _PIDFD_H */ |
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| 54 | |
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