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| author | Alejandro Colomar <alx@kernel.org> | 2023-03-17 17:08:01 +0100 |
|---|---|---|
| committer | Alejandro Colomar <alx@kernel.org> | 2023-03-30 15:14:55 +0200 |
| commit | 4131356cdab8d37fc395ca5466a0401c8573380c (patch) | |
| tree | 8c4c6f1c3172358b735b481cbbfdd9cc04b00ed9 /man2/getpid.2 | |
| parent | fd00f831b52d61a91d59cb3b46182869145d9700 (diff) | |
| download | man-pages-4131356cdab8.tar.gz | |
man*/, man-pages.7: VERSIONS, STANDARDS, HISTORY: Reorganize sections
- Add a new HISTORY section that covers the history of an API, both
regarding implementations and regarding old standards. This was
previously covered in VERSIONS, and in some cases in STANDARDS.
- Repurpose VERSIONS to cover differing implementations in _current_
systems.
- STANDARDS is reduced to only cover current versions of standards.
That basically means only C11 (C99 has been superseeded by C11; C17
is just a bugfix of C11, so not really a new version), and
POSIX.1-2008 (*-2001 was superseeded by *-2008; *-2017 was just a
bugfix for *-2008). The section also mentions for example 'Linux',
'GNU' or 'BSD' when a non-standard API is Linux- or GNU-only or if
it's (de-facto) standard in the BSDs.
- In some cases content that should go into one of these sections was
in NOTES. Move it from there to where it corresponds.
- In the SYNOPSIS, I added [[deprecated]] in some functions that I
found are deprecated by the relevant standards.
- A few other related changes...
Cc: Oskari Pirhonen <xxc3ncoredxx@gmail.com>
Signed-off-by: Alejandro Colomar <alx@kernel.org>
Diffstat (limited to 'man2/getpid.2')
| -rw-r--r-- | man2/getpid.2 | 69 |
1 files changed, 35 insertions, 34 deletions
diff --git a/man2/getpid.2 b/man2/getpid.2 index 49c4b7ec76..9084b261f9 100644 --- a/man2/getpid.2 +++ b/man2/getpid.2 @@ -34,26 +34,26 @@ or a "subreaper" process defined via the operation). .SH ERRORS These functions are always successful. -.SH STANDARDS -POSIX.1-2001, POSIX.1-2008, 4.3BSD, SVr4. -.SH NOTES -If the caller's parent is in a different PID namespace (see -.BR pid_namespaces (7)), +.SH VERSIONS +On Alpha, instead of a pair of +.BR getpid () +and .BR getppid () -returns 0. -.PP -From a kernel perspective, -the PID (which is shared by all of the threads in a multithreaded process) -is sometimes also known as the thread group ID (TGID). -This contrasts with the kernel thread ID (TID), -which is unique for each thread. -For further details, see -.BR gettid (2) -and the discussion of the -.B CLONE_THREAD -flag in -.BR clone (2). -.\" +system calls, a single +.BR getxpid () +system call is provided, which returns a pair of PID and parent PID. +The glibc +.BR getpid () +and +.BR getppid () +wrapper functions transparently deal with this. +See +.BR syscall (2) +for details regarding register mapping. +.SH STANDARDS +POSIX.1-2008. +.SH HISTORY +POSIX.1-2001, 4.3BSD, SVr4. .SS C library/kernel differences From glibc 2.3.4 up to and including glibc 2.24, the glibc wrapper function for @@ -119,22 +119,23 @@ calls to always invoke the actual system call, rather than returning a cached value. .\" FIXME . .\" Review progress of https://bugzilla.redhat.com/show_bug.cgi?id=1469757 -.PP -On Alpha, instead of a pair of -.BR getpid () -and -.BR getppid () -system calls, a single -.BR getxpid () -system call is provided, which returns a pair of PID and parent PID. -The glibc -.BR getpid () -and +.SH NOTES +If the caller's parent is in a different PID namespace (see +.BR pid_namespaces (7)), .BR getppid () -wrapper functions transparently deal with this. -See -.BR syscall (2) -for details regarding register mapping. +returns 0. +.PP +From a kernel perspective, +the PID (which is shared by all of the threads in a multithreaded process) +is sometimes also known as the thread group ID (TGID). +This contrasts with the kernel thread ID (TID), +which is unique for each thread. +For further details, see +.BR gettid (2) +and the discussion of the +.B CLONE_THREAD +flag in +.BR clone (2). .SH SEE ALSO .BR clone (2), .BR fork (2), |