#pragma once
/***
- This file is part of systemd.
-
Copyright 2010 Lennart Poettering
-
- systemd is free software; you can redistribute it and/or modify it
- under the terms of the GNU Lesser General Public License as published by
- the Free Software Foundation; either version 2.1 of the License, or
- (at your option) any later version.
-
- systemd is distributed in the hope that it will be useful, but
- WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Lesser General Public License for more details.
-
- You should have received a copy of the GNU Lesser General Public License
- along with systemd; If not, see <http://www.gnu.org/licenses/>.
***/
#include <alloca.h>
+#include <errno.h>
#include <sched.h>
#include <signal.h>
#include <stdbool.h>
#include "format-util.h"
//#include "ioprio.h"
#include "macro.h"
-//#include "time-util.h"
+#include "time-util.h"
#define procfs_file_alloca(pid, field) \
({ \
int wait_for_terminate(pid_t pid, siginfo_t *status);
typedef enum WaitFlags {
- WAIT_LOG_ABNORMAL = 1U << 0,
- WAIT_LOG_NON_ZERO_EXIT_STATUS = 1U << 1,
+ WAIT_LOG_ABNORMAL = 1 << 0,
+ WAIT_LOG_NON_ZERO_EXIT_STATUS = 1 << 1,
/* A shortcut for requesting the most complete logging */
WAIT_LOG = WAIT_LOG_ABNORMAL|WAIT_LOG_NON_ZERO_EXIT_STATUS,
void sigkill_wait(pid_t pid);
void sigkill_waitp(pid_t *pid);
+#endif // 0
+void sigterm_wait(pid_t pid);
int kill_and_sigcont(pid_t pid, int sig);
int rename_process(const char name[]);
-#endif // 0
int is_kernel_thread(pid_t pid);
int getenv_for_pid(pid_t pid, const char *field, char **_value);
bool is_main_thread(void);
#if 0 /// UNNEEDED by elogind
-noreturn void freeze(void);
+_noreturn_ void freeze(void);
bool oom_score_adjust_is_valid(int oa);
#endif // 0
const char *sigchld_code_to_string(int i) _const_;
int sigchld_code_from_string(const char *s) _pure_;
+#endif // 0
int sched_policy_to_string_alloc(int i, char **s);
+#if 0 /// UNNEEDED by elogind
int sched_policy_from_string(const char *s);
#endif // 0
-#define PTR_TO_PID(p) ((pid_t) ((uintptr_t) p))
-#define PID_TO_PTR(p) ((void*) ((uintptr_t) p))
+static inline pid_t PTR_TO_PID(const void *p) {
+ return (pid_t) ((uintptr_t) p);
+}
+
+static inline void* PID_TO_PTR(pid_t pid) {
+ return (void*) ((uintptr_t) pid);
+}
void valgrind_summary_hack(void);
static inline bool nice_is_valid(int n) {
return n >= PRIO_MIN && n < PRIO_MAX;
}
+#endif // 0
static inline bool sched_policy_is_valid(int i) {
return IN_SET(i, SCHED_OTHER, SCHED_BATCH, SCHED_IDLE, SCHED_FIFO, SCHED_RR);
}
+#if 0 /// UNNEEDED by elogind
static inline bool sched_priority_is_valid(int i) {
return i >= 0 && i <= sched_get_priority_max(SCHED_RR);
}
int must_be_root(void);
typedef enum ForkFlags {
- FORK_RESET_SIGNALS = 1U << 0,
- FORK_CLOSE_ALL_FDS = 1U << 1,
- FORK_DEATHSIG = 1U << 2,
- FORK_NULL_STDIO = 1U << 3,
- FORK_REOPEN_LOG = 1U << 4,
- FORK_LOG = 1U << 5,
+ FORK_RESET_SIGNALS = 1 << 0,
+ FORK_CLOSE_ALL_FDS = 1 << 1,
+ FORK_DEATHSIG = 1 << 2,
+ FORK_NULL_STDIO = 1 << 3,
+ FORK_REOPEN_LOG = 1 << 4,
+ FORK_LOG = 1 << 5,
+ FORK_WAIT = 1 << 6,
+ FORK_NEW_MOUNTNS = 1 << 7,
+ FORK_MOUNTNS_SLAVE = 1 << 8,
} ForkFlags;
int safe_fork_full(const char *name, const int except_fds[], size_t n_except_fds, ForkFlags flags, pid_t *ret_pid);
return safe_fork_full(name, NULL, 0, flags, ret_pid);
}
-int fork_agent(const char *name, const int except[], unsigned n_except, pid_t *pid, const char *path, ...);
+int fork_agent(const char *name, const int except[], size_t n_except, pid_t *pid, const char *path, ...);
+
+int set_oom_score_adjust(int value);
+
+#if SIZEOF_PID_T == 4
+/* The highest possibly (theoretic) pid_t value on this architecture. */
+#define PID_T_MAX ((pid_t) INT32_MAX)
+/* The maximum number of concurrent processes Linux allows on this architecture, as well as the highest valid PID value
+ * the kernel will potentially assign. This reflects a value compiled into the kernel (PID_MAX_LIMIT), and sets the
+ * upper boundary on what may be written to the /proc/sys/kernel/pid_max sysctl (but do note that the sysctl is off by
+ * 1, since PID 0 can never exist and there can hence only be one process less than the limit would suggest). Since
+ * these values are documented in proc(5) we feel quite confident that they are stable enough for the near future at
+ * least to define them here too. */
+#define TASKS_MAX 4194303U
+#elif SIZEOF_PID_T == 2
+#define PID_T_MAX ((pid_t) INT16_MAX)
+#define TASKS_MAX 32767U
+#else
+#error "Unknown pid_t size"
+#endif
+
+assert_cc(TASKS_MAX <= (unsigned long) PID_T_MAX)
+
+/* Like TAKE_PTR() but for child PIDs, resetting them to 0 */
+#define TAKE_PID(pid) \
+ ({ \
+ pid_t _pid_ = (pid); \
+ (pid) = 0; \
+ _pid_; \
+ })
~ianmdlvl / elogind.git / blobdiff