Module 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)).
• close
  Close a raw file descriptor
• 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)).
• execvp
  Replace the current process image with a new one and replicate shell PATH searching behavior (see exec(3)).
• faccessat
  Checks the file named by path for accessibility according to the flags given by mode
• 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
• 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 an internally allocated buffer, returning an OsString 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).
• 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.
• 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.
• read
  Read from a raw file descriptor.
• setegid
  Set the effective group ID
• seteuid
  Set the effective user ID
• 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)).
• 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.
• 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)).
• unlink
  Remove a directory entry
• unlinkat
  Remove a directory entry
• write
  Write to a raw file descriptor.