Module nix::unistd [−][src]
Expand description
Safe wrappers around functions found in libc “unistd.h” header
Modules
Structs
Options for access()
Group identifier
Representation of a Group, based on libc::group
Process identifier
Real, effective and saved group IDs.
Real, effective and saved user IDs.
User identifier
Representation of a User, based on libc::passwd
Enums
Flags for fchownat function.
Represents the successful result of calling fork
Flags for linkat function.
Variable names for pathconf
Variable names for sysconf
Flags for unlinkat function.
Constants
Constant for UID = 0
Functions
Checks the file named by path for accessibility according to the flags given by amode
See access(2)
Change the current working directory of the calling process (see chdir(2)).
Change the ownership of the file at path to be owned by the specified
owner (user) and group (see
chown(2)).
Close a raw file descriptor
Daemonize this process by detaching from the controlling terminal (see daemon(3)).
Create a copy of the specified file descriptor (see dup(2)).
Create a copy of the specified file descriptor using the specified fd (see dup(2)).
Create a new copy of the specified file descriptor using the specified fd and flags (see dup(2)).
Replace the current process image with a new one (see exec(3)).
Replace the current process image with a new one (see execve(2)).
Execute program relative to a directory file descriptor (see execveat(2)).
Replace the current process image with a new one and replicate shell PATH
searching behavior (see
exec(3)).
Replace the current process image with a new one and replicate shell PATH
searching behavior (see
execvpe(3)).
Change the current working directory of the process to the one given as an open file descriptor (see fchdir(2)).
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)).
Change the ownership of the file at path to be owned by the specified
owner (user) and group.
Synchronize the data of a file
Replace the current process image with a new one (see fexecve(2)).
Create a new child process duplicating the parent process (see fork(2)).
Like pathconf, but works with file descriptors instead of paths (see
fpathconf(2))
Synchronize changes to a file
Truncate a file to a specified length
Returns the current directory as a PathBuf
Get the effective group ID
Get the effective user ID
Get the real group ID
Calculate the supplementary group access list.
Get the list of supplementary group IDs of the calling process.
Get the host name and store it in the provided buffer, returning a pointer
the CStr in that buffer on success (see
gethostname(2)).
Get the group id of the calling process (see getpgrp(3)).
Get the pid of this process (see getpid(2)).
Get the pid of this processes’ parent (see getpid(2)).
Gets the real, effective, and saved group IDs.
Gets the real, effective, and saved user IDs.
Get the process group ID of a session leader getsid(2).
Get the caller’s thread ID (see gettid(2).
Get a real user ID
Initialize the supplementary group access list.
Link one file to another file
Move the read/write file offset.
Creates new directory path with access rights mode. (see mkdir(2))
Creates new fifo special file (named pipe) with path path and access rights mode.
Creates new fifo special file (named pipe) with path path and access rights mode.
Creates a regular file which persists even after process termination
Get path-dependent configurable system variables (see pathconf(2))
Suspend the thread until a signal is received.
Create an interprocess channel.
Like pipe, but allows setting certain file descriptor flags.
Read from a raw file descriptor.
Set the effective group ID
Set the effective user ID
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.
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.
Set the group ID
Set the list of supplementary group IDs for the calling process.
Set the system host name (see sethostname(2)).
Set a process group ID (see setpgid(2)).
Sets the real, effective, and saved gid. (see setresuid(2))
Sets the real, effective, and saved uid. (see setresuid(2))
Create new session and set process group id (see setsid(2)).
Set the user ID
Suspend execution for an interval of time
Creates a symbolic link at path2 which points to path1.
Commit filesystem caches to disk
Get configurable system variables (see sysconf(3))
Get the terminal foreground process group (see tcgetpgrp(3)).
Set the terminal foreground process group (see tcgetpgrp(3)).
Truncate a file to a specified length
Get the name of the terminal device that is open on file descriptor fd
(see ttyname(3)).
Remove a directory entry
Remove a directory entry
Write to a raw file descriptor.