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![Daniel Stone](/assets/img/avatar_default.png)
This initialises fdstr to 'safe' values so we can reliably deinit them. Signed-off-by: Daniel Stone <daniels@collabora.com>
96 lines
2.7 KiB
C
96 lines
2.7 KiB
C
/*
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* Copyright 2022 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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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <wayland-util.h>
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#include "os-compatibility.h"
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#include "string-helpers.h"
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/**
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* A container for file descriptors and their string representations, designed
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* to be used when forking child processes.
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*
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* fds[0] is generally used as the file descriptor held within the parent
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* process to communicate with the child, and fds[1] as the child's counterpart.
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*
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* str1[] is used as a string representation of fds[1].
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*/
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struct fdstr {
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char str1[12];
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int fds[2];
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};
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void
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fdstr_update_str1(struct fdstr *s);
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void
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fdstr_set_fd1(struct fdstr *s, int fd);
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bool
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fdstr_clear_cloexec_fd1(struct fdstr *s);
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void
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fdstr_close_all(struct fdstr *s);
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#define FDSTR_INIT ((struct fdstr){ { 0 }, { -1, -1 }})
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/**
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* A container for environment variables and/or process arguments, designed to
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* be used when forking child processes, as setenv() and anything which
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* allocates memory cannot be used between fork() and exec().
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*/
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struct custom_env {
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struct wl_array envp;
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bool env_finalized;
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struct wl_array argp;
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bool arg_finalized;
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};
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void
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custom_env_init_from_environ(struct custom_env *env);
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void
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custom_env_fini(struct custom_env *env);
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void
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custom_env_set_env_var(struct custom_env *env, const char *name, const char *value);
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void
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custom_env_add_arg(struct custom_env *env, const char *arg);
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void
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custom_env_add_from_exec_string(struct custom_env *env, const char *exec_str);
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char *const *
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custom_env_get_envp(struct custom_env *env);
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char *const *
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custom_env_get_argp(struct custom_env *env);
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