Module nix::unistd

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

Modules

• acctacct
  Process accounting
• 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

• ForkResultprocess
  Represents the successful result of calling fork
• 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
  Change a process’s root directory
• 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)).
• eaccessfs
  Checks the file named by path for accessibility according to the flags given by mode using effective UID, effective GID and supplementary group lists.
• 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)).
• faccessatfs
  Checks the file named by path for accessibility according to the flags given by mode
• 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 an internally allocated buffer, returning an OsString on success (see gethostname(2)).
• getpgidprocess
  Get process group
• 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
  Determines if the file descriptor refers to a valid terminal type device.
• linkatfs
  Link one file to another file
• lseekfs
  Move the read/write file offset.
• lseek64fs
  Move the read/write file offset.
• mkdirfs
  Creates new directory path with access rights mode. (see mkdir(2))
• mkdtempfs and feature
  Creates a directory which persists even after process termination
• 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_rootfs
  Change the root file system.
• 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
• syncfsfs
  Commit filesystem caches containing file referred to by the open file descriptor fd 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.

Type Aliases

• FchownatFlagsuser and fs
• LinkatFlagsfs