Available on crate feature
process
only.Expand description
Process-associated operations.
Structs
CpuSet
represents a bit-mask of CPUs.- A Linux CPU ID.
PR_FPEMU_*
.- Zero means floating point exceptions are disabled.
gid_t
—A Unix group ID.- A result from
membarrier_query
. pid_t
—A non-zero Unix process ID.PIDFD_*
flags for use withpidfd_open
.PR_PAC_AP*
.- This structure provides new memory descriptor map which mostly modifies
/proc/pid/stat[m]
output for a task. This mostly done in a sake of checkpoint/restore functionality. PR_SPEC_*
.- Zero means the processors are not vulnerable.
uid_t
—A Unix user ID.PR_UNALIGN_*
.struct utsname
—Return type foruname
.- Options for modifying the behavior of wait/waitpid
- Options for modifying the behavior of waitid
- The status of a process after calling
waitid
.
Enums
SUID_DUMP_*
.PR_ENDIAN_*
.PR_FP_MODE_*
.PR_MCE_KILL_*
.- A command for use with
membarrier
andmembarrier_cpu
. - Process ptracer.
PR_SPEC_*
.PR_TSC_*
.PR_TIMING_*
.PR_SET_MM_*
.- The identifier to wait on in a call to
waitid
.
Constants
EXIT_FAILURE
for use withexit
.- The exit status used by a process terminated with a
Signal::Abort
signal. EXIT_SUCCESS
for use withexit
.
Functions
chdir(path)
—Change the current working directory.- Get the
child subreaper
setting of the calling process. chroot(path)
—Change the process root directory.- Put the process in the
IO_FLUSHER
state, allowing it to make progress when allocating memory. - Enable or disable all performance counters attached to the calling process.
- Set enabled pointer authentication keys.
- Provides one-shot access to all the addresses by passing in a
PrctlMmMap
. - Sets the state of the speculation misfeature.
- Get the current state of the calling process’s
dumpable
attribute. - Get enabled pointer authentication keys.
- Get the endianness of the calling process.
fchdir(fd)
—Change the current working directory.- Get floating point emulation control bits.
- Get floating point exception mode.
- Get the current floating point mode.
getcwd()
—Return the current working directory.getegid()
—Returns the process’ effective group ID.geteuid()
—Returns the process’ effective user ID.getgid()
—Returns the process’ real group ID.getgroups()
—Return a list of the current user’s groups.getpgid(pid)
—Returns the process group ID of the given process.getpgrp()
—Returns the process’ group ID.getpid()
—Returns the process’ ID.getppid()
—Returns the parent process’ ID.getpriority(PRIO_PGRP, gid)
—Get the scheduling priority of the given process group.getpriority(PRIO_PROCESS, pid)
—Get the scheduling priority of the given process.getpriority(PRIO_USER, uid)
—Get the scheduling priority of the given user.getrlimit(resource)
—Get a process resource limit value.getsid(pid)
—Get the session ID of the given process.getuid()
—Returns the process’ real user ID.- Get the
IO_FLUSHER
state of the caller. kill(0, sig)
—Sends a signal to all processes in the current process group.kill(pid, sig)
—Sends a signal to a process.kill(-pid, sig)
—Sends a signal to all processes in a process group.- Get the current per-process machine check kill policy.
membarrier(cmd, 0, 0)
—Perform a memory barrier.membarrier(cmd, MEMBARRIER_CMD_FLAG_CPU, cpu)
—Perform a memory barrier with a specific CPU.membarrier(MEMBARRIER_CMD_QUERY, 0, 0)
—Query the supportedmembarrier
commands.nice(inc)
—Adjust the scheduling priority of the current process.- Get the current value of the parent process death signal.
syscall(SYS_pidfd_open, pid, flags)
—Creates a file descriptor for a process.prlimit(pid, resource, new)
—Get and set a process resource limit value.sched_getaffinity(pid)
—Get a thread’s CPU affinity mask.sched_setaffinity(pid, cpuset)
—Set a thread’s CPU affinity mask.sched_yield()
—Hints to the OS that other processes should run.- Set a new auxiliary vector.
- Set the
child subreaper
attribute of the calling process. - Set the state of the
dumpable
attribute, which determines whether the process can be traced and whether core dumps are produced for the calling process upon delivery of a signal whose default behavior is to produce a core dump. - Set the endianness of the calling process.
- Supersede the
/proc/pid/exe
symbolic link with a new one pointing to a new executable file. - Set floating point emulation control bits.
- Set floating point exception mode.
- Allow control of the floating point mode from user space.
- Set the machine check memory corruption kill policy for the calling thread.
- Set the parent-death signal of the calling process.
- Declare that the ptracer process can
ptrace
the calling process as if it were a direct process ancestor. - Set the state of the flag determining if the timestamp counter can be read by the process.
- Set whether to use (normal, traditional) statistical process timing or accurate timestamp-based process timing.
- Set unaligned access control bits.
- Modify certain kernel memory map descriptor addresses of the calling process.
- Set the name for a virtual memory region.
- `sethostname(name)—Sets the system host name.
setpgid(pid, pgid)
—Sets the process group ID of the given process.setpriority(PRIO_PGRP, pgid)
—Get the scheduling priority of the given process group.setpriority(PRIO_PROCESS, pid)
—Get the scheduling priority of the given process.setpriority(PRIO_USER, uid)
—Get the scheduling priority of the given user.setrlimit(resource, new)
—Set a process resource limit value.setsid()
—Create a new session.- Get the state of the speculation misfeature.
sysinfo()
—Returns status information about the runtime OS.kill(0, 0)
—Check validity of pid and permissions to send signals to the all processes in the current process group, without actually sending any signals.kill(pid, 0)
—Check validity of pid and permissions to send signals to the process, without actually sending any signals.kill(-pid, 0)
—Check validity of pid and permissions to send signals to all processes in the process group, without actually sending any signals.- Get the state of the flag determining if the timestamp counter can be read.
- Get which process timing method is currently in use.
- umask
fs
umask(mask)
—Set the process file creation mask. - Get unaligned access control bits.
uname()
—Returns high-level information about the runtime OS and hardware.- Get the size of the
PrctlMmMap
the kernel expects. wait(waitopts)
—Wait for any of the children of calling process to change state.waitid(_, _, _, opts)
—Wait for the specified child process to change state.waitpid(pid, waitopts)
—Wait for a specific process to change state.
Type Definitions
- The raw integer value of a Unix group ID. A group identifier as a raw integer.
- The raw integer value of a Unix process ID. A non-zero process identifier as a raw non-zero integer.
- The raw integer value of a Unix process ID. A process identifier as a raw integer.
- The raw integer value of a Unix user ID. A user identifier as a raw integer.
sysinfo