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330 lines
7.9 KiB
PHTML
330 lines
7.9 KiB
PHTML
4 years ago
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<?php
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namespace Safe;
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use Safe\Exceptions\PosixException;
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/**
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* posix_access checks the user's permission of a file.
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*
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* @param string $file The name of the file to be tested.
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* @param int $mode A mask consisting of one or more of POSIX_F_OK,
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* POSIX_R_OK, POSIX_W_OK and
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* POSIX_X_OK.
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*
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* POSIX_R_OK, POSIX_W_OK and
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* POSIX_X_OK request checking whether the file
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* exists and has read, write and execute permissions, respectively.
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* POSIX_F_OK just requests checking for the
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* existence of the file.
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* @throws PosixException
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*
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*/
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function posix_access(string $file, int $mode = POSIX_F_OK): void
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{
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error_clear_last();
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$result = \posix_access($file, $mode);
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if ($result === false) {
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throw PosixException::createFromPhpError();
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}
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}
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/**
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* Gets information about a group provided its name.
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*
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* @param string $name The name of the group
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* @return array Returns an array on success.
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* The array elements returned are:
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*
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* The group information array
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*
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*
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*
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* Element
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* Description
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*
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*
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*
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*
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* name
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*
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* The name element contains the name of the group. This is
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* a short, usually less than 16 character "handle" of the
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* group, not the real, full name. This should be the same as
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* the name parameter used when
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* calling the function, and hence redundant.
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*
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*
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*
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* passwd
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*
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* The passwd element contains the group's password in an
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* encrypted format. Often, for example on a system employing
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* "shadow" passwords, an asterisk is returned instead.
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*
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*
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*
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* gid
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*
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* Group ID of the group in numeric form.
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*
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*
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*
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* members
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*
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* This consists of an array of
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* string's for all the members in the group.
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*
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*
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*
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*
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*
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* @throws PosixException
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*
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*/
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function posix_getgrnam(string $name): array
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{
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error_clear_last();
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$result = \posix_getgrnam($name);
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if ($result === false) {
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throw PosixException::createFromPhpError();
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}
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return $result;
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}
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/**
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* Returns the process group identifier of the process
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* pid.
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*
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* @param int $pid The process id.
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* @return int Returns the identifier, as an integer.
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* @throws PosixException
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*
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*/
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function posix_getpgid(int $pid): int
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{
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error_clear_last();
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$result = \posix_getpgid($pid);
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if ($result === false) {
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throw PosixException::createFromPhpError();
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}
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return $result;
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}
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/**
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* Calculates the group access list for the user specified in name.
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*
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* @param string $name The user to calculate the list for.
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* @param int $base_group_id Typically the group number from the password file.
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* @throws PosixException
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*
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*/
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function posix_initgroups(string $name, int $base_group_id): void
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{
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error_clear_last();
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$result = \posix_initgroups($name, $base_group_id);
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if ($result === false) {
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throw PosixException::createFromPhpError();
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}
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}
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/**
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* Send the signal sig to the process with
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* the process identifier pid.
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*
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* @param int $pid The process identifier.
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* @param int $sig One of the PCNTL signals constants.
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* @throws PosixException
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*
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*/
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function posix_kill(int $pid, int $sig): void
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{
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error_clear_last();
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$result = \posix_kill($pid, $sig);
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if ($result === false) {
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throw PosixException::createFromPhpError();
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}
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}
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/**
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* posix_mkfifo creates a special
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* FIFO file which exists in the file system and acts as
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* a bidirectional communication endpoint for processes.
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*
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* @param string $pathname Path to the FIFO file.
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* @param int $mode The second parameter mode has to be given in
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* octal notation (e.g. 0644). The permission of the newly created
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* FIFO also depends on the setting of the current
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* umask. The permissions of the created file are
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* (mode & ~umask).
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* @throws PosixException
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*
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*/
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function posix_mkfifo(string $pathname, int $mode): void
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{
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error_clear_last();
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$result = \posix_mkfifo($pathname, $mode);
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if ($result === false) {
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throw PosixException::createFromPhpError();
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}
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}
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/**
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* Creates a special or ordinary file.
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*
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* @param string $pathname The file to create
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* @param int $mode This parameter is constructed by a bitwise OR between file type (one of
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* the following constants: POSIX_S_IFREG,
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* POSIX_S_IFCHR, POSIX_S_IFBLK,
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* POSIX_S_IFIFO or
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* POSIX_S_IFSOCK) and permissions.
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* @param int $major The major device kernel identifier (required to pass when using
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* S_IFCHR or S_IFBLK).
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* @param int $minor The minor device kernel identifier.
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* @throws PosixException
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*
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*/
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function posix_mknod(string $pathname, int $mode, int $major = 0, int $minor = 0): void
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{
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error_clear_last();
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$result = \posix_mknod($pathname, $mode, $major, $minor);
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if ($result === false) {
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throw PosixException::createFromPhpError();
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}
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}
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/**
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* Set the effective group ID of the current process. This is a
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* privileged function and needs appropriate privileges (usually
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* root) on the system to be able to perform this function.
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*
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* @param int $gid The group id.
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* @throws PosixException
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*
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*/
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function posix_setegid(int $gid): void
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{
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error_clear_last();
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$result = \posix_setegid($gid);
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if ($result === false) {
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throw PosixException::createFromPhpError();
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}
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}
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/**
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* Set the effective user ID of the current process. This is a privileged
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* function and needs appropriate privileges (usually root) on
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* the system to be able to perform this function.
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*
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* @param int $uid The user id.
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* @throws PosixException
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*
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*/
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function posix_seteuid(int $uid): void
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{
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error_clear_last();
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$result = \posix_seteuid($uid);
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if ($result === false) {
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throw PosixException::createFromPhpError();
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}
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}
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/**
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* Set the real group ID of the current process. This is a
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* privileged function and needs appropriate privileges (usually
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* root) on the system to be able to perform this function. The
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* appropriate order of function calls is
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* posix_setgid first,
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* posix_setuid last.
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*
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* @param int $gid The group id.
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* @throws PosixException
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*
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*/
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function posix_setgid(int $gid): void
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{
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error_clear_last();
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$result = \posix_setgid($gid);
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if ($result === false) {
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throw PosixException::createFromPhpError();
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}
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}
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/**
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* Let the process pid join the process group
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* pgid.
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*
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* @param int $pid The process id.
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* @param int $pgid The process group id.
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* @throws PosixException
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*
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*/
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function posix_setpgid(int $pid, int $pgid): void
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{
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error_clear_last();
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$result = \posix_setpgid($pid, $pgid);
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if ($result === false) {
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throw PosixException::createFromPhpError();
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}
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}
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/**
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* posix_setrlimit sets the soft and hard limits for a
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* given system resource.
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*
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*
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* Each resource has an associated soft and hard limit. The soft
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* limit is the value that the kernel enforces for the corresponding
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* resource. The hard limit acts as a ceiling for the soft limit.
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* An unprivileged process may only set its soft limit to a value
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* from 0 to the hard limit, and irreversibly lower its hard limit.
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*
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* @param int $resource The
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* resource limit constant
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* corresponding to the limit that is being set.
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* @param int $softlimit The soft limit, in whatever unit the resource limit requires, or
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* POSIX_RLIMIT_INFINITY.
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* @param int $hardlimit The hard limit, in whatever unit the resource limit requires, or
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* POSIX_RLIMIT_INFINITY.
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* @throws PosixException
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*
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*/
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function posix_setrlimit(int $resource, int $softlimit, int $hardlimit): void
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{
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error_clear_last();
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$result = \posix_setrlimit($resource, $softlimit, $hardlimit);
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if ($result === false) {
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throw PosixException::createFromPhpError();
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}
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}
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/**
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* Set the real user ID of the current process. This is a privileged
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* function that needs appropriate privileges (usually root) on
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* the system to be able to perform this function.
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*
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* @param int $uid The user id.
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* @throws PosixException
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*
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*/
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function posix_setuid(int $uid): void
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{
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error_clear_last();
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$result = \posix_setuid($uid);
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if ($result === false) {
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throw PosixException::createFromPhpError();
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}
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}
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