/usr/include/h2o/serverutil.h is in libh2o-dev-common 2.2.4+dfsg-1build1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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* Copyright (c) 2014 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.
*/
#ifndef h2o__server_starter_h
#define h2o__server_starter_h
#include <stddef.h>
/* taken from sysexits.h */
#ifndef EX_SOFTWARE
#define EX_SOFTWARE 70
#endif
#ifndef EX_OSERR
#define EX_OSERR 71
#endif
#ifndef EX_TEMPFAIL
#define EX_TEMPFAIL 75
#endif
#ifndef EX_CONFIG
#define EX_CONFIG 78
#endif
/**
* equivalent of signal(3)
*/
void h2o_set_signal_handler(int signo, void (*cb)(int signo));
/**
* equiv. to setuidgid of djb
*/
int h2o_setuidgid(const char *user);
/**
* return a list of fds passed in from Server::Starter, or 0 if Server::Starter was not used. -1 on error
*/
size_t h2o_server_starter_get_fds(int **_fds);
/**
* spawns a command with given arguments, while mapping the designated file descriptors.
* @param cmd file being executed
* @param argv argv passed to the executable
* @param mapped_fds if non-NULL, must point to an array contain containing a list of pair of file descriptors, terminated with -1.
* Every pair of the mapping will be duplicated by calling `dup2` before execvp is being called if the second value of the
* pair is not -1. If the second value is -1, then `close` is called with the first value as the argument.
* @return pid of the process being spawned if successful, or -1 if otherwise
*/
pid_t h2o_spawnp(const char *cmd, char *const *argv, const int *mapped_fds, int clocexec_mutex_is_locked);
/**
* executes a command and returns its output
* @param cmd
* @param argv
* @param resp the output, only available if the function returns zero
* @param child_status result of waitpid(child_pid), only available if the function returns zero
*/
int h2o_read_command(const char *cmd, char **argv, h2o_buffer_t **resp, int *child_status);
/**
* Gets the number of processor cores
*/
size_t h2o_numproc(void);
#endif
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