fafe5f0fc2
Rename the bits handling environment variables (currently, all of it), so we have room to handle args as well. No functional changes. Signed-off-by: Daniel Stone <daniels@collabora.com>
154 lines
3.1 KiB
C
154 lines
3.1 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 "config.h"
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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 "helpers.h"
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#include "os-compatibility.h"
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#include "process-util.h"
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#include "string-helpers.h"
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extern char **environ; /* defined by libc */
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void
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fdstr_update_str1(struct fdstr *s)
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{
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snprintf(s->str1, sizeof(s->str1), "%d", s->fds[1]);
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}
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void
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fdstr_set_fd1(struct fdstr *s, int fd)
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{
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s->fds[0] = -1;
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s->fds[1] = fd;
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fdstr_update_str1(s);
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}
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bool
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fdstr_clear_cloexec_fd1(struct fdstr *s)
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{
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return os_fd_clear_cloexec(s->fds[1]) >= 0;
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}
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void
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fdstr_close_all(struct fdstr *s)
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{
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unsigned i;
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for (i = 0; i < ARRAY_LENGTH(s->fds); i++) {
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close(s->fds[i]);
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s->fds[i] = -1;
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}
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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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{
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char **it;
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char **ep;
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wl_array_init(&env->envp);
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env->env_finalized = false;
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for (it = environ; *it; it++) {
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ep = wl_array_add(&env->envp, sizeof *ep);
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assert(ep);
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*ep = strdup(*it);
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assert(*ep);
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}
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}
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void
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custom_env_fini(struct custom_env *env)
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{
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char **p;
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wl_array_for_each(p, &env->envp)
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free(*p);
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wl_array_release(&env->envp);
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}
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static char **
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custom_env_get_env_var(struct custom_env *env, const char *name)
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{
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char **ep;
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size_t name_len = strlen(name);
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wl_array_for_each(ep, &env->envp) {
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char *entry = *ep;
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if (strncmp(entry, name, name_len) == 0 &&
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entry[name_len] == '=') {
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return ep;
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}
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}
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return NULL;
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}
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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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{
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char **ep;
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assert(strchr(name, '=') == NULL);
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assert(!env->env_finalized);
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ep = custom_env_get_env_var(env, name);
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if (ep)
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free(*ep);
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else
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ep = wl_array_add(&env->envp, sizeof *ep);
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assert(ep);
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str_printf(ep, "%s=%s", name, value);
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assert(*ep);
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}
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char *const *
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custom_env_get_envp(struct custom_env *env)
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{
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char **ep;
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assert(!env->env_finalized);
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/* add terminating NULL */
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ep = wl_array_add(&env->envp, sizeof *ep);
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assert(ep);
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*ep = NULL;
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env->env_finalized = true;
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return env->envp.data;
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}
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