Module nix::unistd

Safe wrappers around functions found in libc “unistd.h” header

Modules

acct
alarm	Alarm signal scheduling.

Structs

AccessFlags	Options for access()
Gid	Group identifier
Group	Representation of a Group, based on libc::group
Pid	Process identifier
Uid	User identifier
User	Representation of a User, based on libc::passwd

Enums

FchownatFlags	Flags for fchownat function.
ForkResult	Represents the successful result of calling fork
LinkatFlags	Flags for linkat function.
PathconfVar	Variable names for pathconf
SysconfVar	Variable names for sysconf
UnlinkatFlags	Flags for unlinkat function.
Whence	Directive that tells lseek and lseek64 what the offset is relative to.

Constants

ROOT	Constant for UID = 0

Functions

access	Checks the file named by path for accessibility according to the flags given by amode See access(2)
chdir	Change the current working directory of the calling process (see chdir(2)).
chown	Change the ownership of the file at path to be owned by the specified owner (user) and group (see chown(2)).
chroot
close	Close a raw file descriptor
daemon	Daemonize this process by detaching from the controlling terminal (see daemon(3)).
dup	Create a copy of the specified file descriptor (see dup(2)).
dup2	Create a copy of the specified file descriptor using the specified fd (see dup(2)).
dup3	Create a new copy of the specified file descriptor using the specified fd and flags (see dup(2)).
execv	Replace the current process image with a new one (see exec(3)).
execve	Replace the current process image with a new one (see execve(2)).
execveat	Execute program relative to a directory file descriptor (see execveat(2)).
execvp	Replace the current process image with a new one and replicate shell PATH searching behavior (see exec(3)).
execvpe	Replace the current process image with a new one and replicate shell PATH searching behavior (see execvpe(3)).
fchdir	Change the current working directory of the process to the one given as an open file descriptor (see fchdir(2)).
fchown	Change the ownership of the file referred to by the open file descriptor fd to be owned by the specified owner (user) and group (see fchown(2)).
fchownat	Change the ownership of the file at path to be owned by the specified owner (user) and group.
fdatasync	Synchronize the data of a file
fexecve	Replace the current process image with a new one (see fexecve(2)).
fork⚠	Create a new child process duplicating the parent process (see fork(2)).
fpathconf	Like pathconf, but works with file descriptors instead of paths (see fpathconf(2))
fsync	Synchronize changes to a file
ftruncate	Truncate a file to a specified length
getcwd	Returns the current directory as a PathBuf
getegid	Get the effective group ID
geteuid	Get the effective user ID
getgid	Get the real group ID
getgrouplist	Calculate the supplementary group access list.
getgroups	Get the list of supplementary group IDs of the calling process.
gethostname	Get the host name and store it in the provided buffer, returning a pointer the CStr in that buffer on success (see gethostname(2)).
getpgid
getpgrp	Get the group id of the calling process (see getpgrp(3)).
getpid	Get the pid of this process (see getpid(2)).
getppid	Get the pid of this processes’ parent (see getpid(2)).
getsid	Get the process group ID of a session leader getsid(2).
gettid	Get the caller’s thread ID (see gettid(2).
getuid	Get a real user ID
initgroups	Initialize the supplementary group access list.
isatty
linkat	Link one file to another file
lseek	Move the read/write file offset.
lseek64
mkdir	Creates new directory path with access rights mode. (see mkdir(2))
mkfifo	Creates new fifo special file (named pipe) with path path and access rights mode.
mkfifoat	Creates new fifo special file (named pipe) with path path and access rights mode.
mkstemp	Creates a regular file which persists even after process termination
pathconf	Get path-dependent configurable system variables (see pathconf(2))
pause	Suspend the thread until a signal is received.
pipe	Create an interprocess channel.
pipe2	Like pipe, but allows setting certain file descriptor flags.
pivot_root
read	Read from a raw file descriptor.
setegid	Set the effective group ID
seteuid	Set the effective user ID
setfsgid	Set the group identity used for filesystem checks per-thread. On both success and failure, this call returns the previous filesystem group ID of the caller.
setfsuid	Set the user identity used for filesystem checks per-thread. On both success and failure, this call returns the previous filesystem user ID of the caller.
setgid	Set the group ID
setgroups	Set the list of supplementary group IDs for the calling process.
sethostname	Set the system host name (see sethostname(2)).
setpgid	Set a process group ID (see setpgid(2)).
setresgid	Sets the real, effective, and saved gid. (see setresuid(2))
setresuid	Sets the real, effective, and saved uid. (see setresuid(2))
setsid	Create new session and set process group id (see setsid(2)).
setuid	Set the user ID
sleep	Suspend execution for an interval of time
symlinkat	Creates a symbolic link at path2 which points to path1.
sync	Commit filesystem caches to disk
sysconf	Get configurable system variables (see sysconf(3))
tcgetpgrp	Get the terminal foreground process group (see tcgetpgrp(3)).
tcsetpgrp	Set the terminal foreground process group (see tcgetpgrp(3)).
truncate	Truncate a file to a specified length
ttyname	Get the name of the terminal device that is open on file descriptor fd (see ttyname(3)).
unlink	Remove a directory entry
unlinkat	Remove a directory entry
write	Write to a raw file descriptor.