a5cede8c24
PID1 may modified the environment passed by the kernel when it starts
running. Commit 9d48671c62 unset $HOME for
example.
In case PID1 is going to switch to a new root and execute a new system manager
which is not systemd, we should restore the original environment as the new
manager might expect some variables to be set by default (more specifically
$HOME).
72 lines
1.3 KiB
C
72 lines
1.3 KiB
C
/* SPDX-License-Identifier: LGPL-2.1+ */
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#pragma once
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#include <stdint.h>
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#include "macro.h"
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extern int saved_argc;
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extern char **saved_argv;
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static inline void save_argc_argv(int argc, char **argv) {
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saved_argc = argc;
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saved_argv = argv;
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}
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extern char **saved_env;
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void save_env(void);
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bool kexec_loaded(void);
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int prot_from_flags(int flags) _const_;
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bool in_initrd(void);
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void in_initrd_force(bool value);
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int on_ac_power(void);
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static inline unsigned u64log2(uint64_t n) {
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#if __SIZEOF_LONG_LONG__ == 8
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return (n > 1) ? (unsigned) __builtin_clzll(n) ^ 63U : 0;
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#else
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#error "Wut?"
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#endif
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}
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static inline unsigned u32ctz(uint32_t n) {
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#if __SIZEOF_INT__ == 4
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return n != 0 ? __builtin_ctz(n) : 32;
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#else
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#error "Wut?"
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#endif
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}
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static inline unsigned log2i(int x) {
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assert(x > 0);
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return __SIZEOF_INT__ * 8 - __builtin_clz(x) - 1;
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}
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static inline unsigned log2u(unsigned x) {
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assert(x > 0);
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return sizeof(unsigned) * 8 - __builtin_clz(x) - 1;
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}
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static inline unsigned log2u_round_up(unsigned x) {
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assert(x > 0);
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if (x == 1)
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return 0;
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return log2u(x - 1) + 1;
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}
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int container_get_leader(const char *machine, pid_t *pid);
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int version(void);
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int str_verscmp(const char *s1, const char *s2);
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void disable_coredumps(void);
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