Module nix::unistd

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

Modules

acctacct

alarmsignal

Alarm signal scheduling.

Structs

AccessFlagsfs

Options for access()

Giduser

Group identifier

Groupuser

Representation of a Group, based on libc::group

Pidprocess

Process identifier

ResGiduser

Real, effective and saved group IDs.

ResUiduser

Real, effective and saved user IDs.

Uiduser

User identifier

Useruser

Representation of a User, based on libc::passwd

Enums

FchownatFlagsuser and fs

Flags for fchownat function.

ForkResultprocess

Represents the successful result of calling fork

LinkatFlagsfs

Flags for linkat function.

PathconfVarfs and feature

Variable names for pathconf

SysconfVarfeature

Variable names for sysconf

UnlinkatFlagsfs

Flags for unlinkat function.

Whencefs

Directive that tells lseek and lseek64 what the offset is relative to.

Constants

ROOTuser

Constant for UID = 0

Functions

accessfs

Checks the file named by path for accessibility according to the flags given by amode See access(2)

chdirfs

Change the current working directory of the calling process (see chdir(2)).

chownuser and fs

Change the ownership of the file at path to be owned by the specified owner (user) and group (see chown(2)).

chrootfs

close

Close a raw file descriptor

daemonprocess

Daemonize this process by detaching from the controlling terminal (see daemon(3)).

dupfs

Create a copy of the specified file descriptor (see dup(2)).

dup2fs

Create a copy of the specified file descriptor using the specified fd (see dup(2)).

dup3fs

Create a new copy of the specified file descriptor using the specified fd and flags (see dup(2)).

execvprocess

Replace the current process image with a new one (see exec(3)).

execveprocess

Replace the current process image with a new one (see execve(2)).

execveatprocess

Execute program relative to a directory file descriptor (see execveat(2)).

execvpprocess

Replace the current process image with a new one and replicate shell PATH searching behavior (see exec(3)).

execvpeprocess

Replace the current process image with a new one and replicate shell PATH searching behavior (see execvpe(3)).

fchdirfs

Change the current working directory of the process to the one given as an open file descriptor (see fchdir(2)).

fchownuser and fs

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)).

fchownatuser and fs

Change the ownership of the file at path to be owned by the specified owner (user) and group.

fdatasyncfs

Synchronize the data of a file

fexecveprocess

Replace the current process image with a new one (see fexecve(2)).

fork^⚠process

Create a new child process duplicating the parent process (see fork(2)).

fpathconffs and feature

Like pathconf, but works with file descriptors instead of paths (see fpathconf(2))

fsyncfs

Synchronize changes to a file

ftruncatefs

Truncate a file to a specified length

getcwdfs

Returns the current directory as a PathBuf

getegiduser

Get the effective group ID

geteuiduser

Get the effective user ID

getgiduser

Get the real group ID

getgrouplistuser

Calculate the supplementary group access list.

getgroupsuser

Get the list of supplementary group IDs of the calling process.

gethostnamehostname

Get the host name and store it in the provided buffer, returning a pointer the CStr in that buffer on success (see gethostname(2)).

getpgidprocess

getpgrpprocess

Get the group id of the calling process (see getpgrp(3)).

getpidprocess

Get the pid of this process (see getpid(2)).

getppidprocess

Get the pid of this processes’ parent (see getpid(2)).

getresgiduser

Gets the real, effective, and saved group IDs.

getresuiduser

Gets the real, effective, and saved user IDs.

getsidprocess

Get the process group ID of a session leader getsid(2).

gettidprocess

Get the caller’s thread ID (see gettid(2).

getuiduser

Get a real user ID

initgroupsuser

Initialize the supplementary group access list.

isattyfs

linkatfs

Link one file to another file

lseekfs

Move the read/write file offset.

lseek64fs

mkdirfs

Creates new directory path with access rights mode. (see mkdir(2))

mkfifofs

Creates new fifo special file (named pipe) with path path and access rights mode.

mkfifoatfs

Creates new fifo special file (named pipe) with path path and access rights mode.

mkstempfs

Creates a regular file which persists even after process termination

pathconffs and feature

Get path-dependent configurable system variables (see pathconf(2))

pausesignal

Suspend the thread until a signal is received.

pipe

Create an interprocess channel.

pipe2fs

Like pipe, but allows setting certain file descriptor flags.

pivot_root

read

Read from a raw file descriptor.

setegiduser

Set the effective group ID

seteuiduser

Set the effective user ID

setfsgidfs and user

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.

setfsuidfs and user

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.

setgiduser

Set the group ID

setgroupsuser

Set the list of supplementary group IDs for the calling process.

sethostnamehostname

Set the system host name (see sethostname(2)).

setpgidprocess

Set a process group ID (see setpgid(2)).

setresgiduser

Sets the real, effective, and saved gid. (see setresuid(2))

setresuiduser

Sets the real, effective, and saved uid. (see setresuid(2))

setsidprocess

Create new session and set process group id (see setsid(2)).

setuiduser

Set the user ID

sleep

Suspend execution for an interval of time

symlinkatfs

Creates a symbolic link at path2 which points to path1.

syncfs

Commit filesystem caches to disk

sysconffeature

Get configurable system variables (see sysconf(3))

tcgetpgrpprocess and term

Get the terminal foreground process group (see tcgetpgrp(3)).

tcsetpgrpprocess and term

Set the terminal foreground process group (see tcgetpgrp(3)).

truncatefs

Truncate a file to a specified length

ttynameterm

Get the name of the terminal device that is open on file descriptor fd (see ttyname(3)).

unlinkfs

Remove a directory entry

unlinkatfs

Remove a directory entry

write

Write to a raw file descriptor.