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1. www.php.net › manual › enPHP: posix_getgroups - Manual

   www.php.net › manual › en

   posix_getgroups (PHP 4, PHP 5, PHP 7, PHP 8) posix_getgroups — Return the group set of the current process

2. pubs.opengroup.org › functions › getgroupsgetgroups - Open Group

   pubs.opengroup.org › functions › getgroups

   The related function setgroups () is a privileged operation and therefore is not covered by this volume of POSIX.1-2024. As implied by the definition of supplementary groups, the effective group ID may appear in the array returned by getgroups () or it may be returned only by getegid ().

3. www.man7.org › linux › man-pagesgetgroups (2) - Linux manual page - man7.org

   www.man7.org › linux › man-pages

   not covered by POSIX.1. The original Linux getgroups () system call supported only 16-bit group IDs. Subsequently, Linux 2.4 added getgroups32 (), supporting 32-bit IDs. The glibc getgroups () wrapper function transparently deals with the variation across kernel versions. NOTES top A process can have up to NGROUPS_MAX supplementary group IDs in

4. jick.net › Manuals › PHPposix_getgroups - jick.net

   jick.net › Manuals › PHP

   Returns an array of integers containing the numeric group ids of the group set of the current process. See also posix_getgrgid () for information on how to convert this into useable group names. Prev Home Next posix_getgrnam Up posix_getlogin

5. onlinephp.io › index › posix-getgroupsposix_getgroups - Examples

   onlinephp.io › index › posix-getgroups

   Examples of posix_getgroups. Info and examples on posix_getgroups PHP Function

6. phpdoctest.github.io › en › functionPHP Manual: Return the group set of the current process

   phpdoctest.github.io › en › function

   Return Values Returns an array of integers containing the numeric group ids of the group set of the current process.

7. People also ask

   What is glibc getgroups32?

   • group IDs. Subsequently, Linux 2.4 added getgroups32 (), supporting 32-bit IDs. The glibc getgroups () wrapper function transparently deals with the variation across kernel versions. A process can have up to NGROUPS_MAX supplementary group IDs in addition to the effective group ID.

   getgroups (2) — Linux manual page - man7.org

   www.man7.org/linux/man-pages/man2/getgroups.2.html

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   What does setgroups() do?

   • setgroups () sets the supplementary group IDs for the calling process. Appropriate privileges are required (see the description of the EPERM error, below). The size argument specifies the number of supplementary group IDs in the buffer pointed to by list. A process can drop all of its supplementary groups with the call: setgroups(0, NULL);

   getgroups (2) — Linux manual page - man7.org

   www.man7.org/linux/man-pages/man2/getgroups.2.html

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   How does NPTL handle POSIX requirements?

   • user_namespaces(7). At the kernel level, user IDs and group IDs are a per-thread attribute. However, POSIX requires that all threads in a process share the same credentials. The NPTL threading implementation handles the POSIX requirements by providing wrapper functions for the various system calls that change process UIDs and GIDs.

   getgroups (2) — Linux manual page - man7.org

   www.man7.org/linux/man-pages/man2/getgroups.2.html

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   Why does setgroups fail in Linux?

   • setgroups () can additionally fail with the following errors: EINVAL size is greater than NGROUPS_MAX (32 before Linux 2.6.4; 65536 since Linux 2.6.4). ENOMEM Out of memory. EPERM The calling process has insufficient privilege (the caller does not have the CAP_SETGID capability in the user namespace in which it resides).

   getgroups (2) — Linux manual page - man7.org

   www.man7.org/linux/man-pages/man2/getgroups.2.html

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8. php.joaquinfernandez.net › posix-getgroupsposix_getgroups - PHP Manual

   php.joaquinfernandez.net › posix-getgroups

   posix_getgroups — Return the group set of the current process