The constants needed for using this function are defined in
<linux/ipc.h>. Add the include, even when those constants are not
mentioned in this manual page.
Signed-off-by: Alejandro Colomar <alx.manpages@gmail.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
Of course that is for the glibc wrapper. As all of the other
pages that don't explicitly say otherwise.
Signed-off-by: Alejandro Colomar <alx.manpages@gmail.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
In this case there's a wrapper provided by libaio,
but this page documents the raw syscall.
Also remove <linux/time.h> from the includes: 'struct timespec'
is already documented in system_data_types(7), where the
information is more up to date.
Signed-off-by: Alejandro Colomar <alx.manpages@gmail.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
In this case there's a wrapper provided by libaio,
but this page documents the raw syscall.
Signed-off-by: Alejandro Colomar <alx.manpages@gmail.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
At the same time, document only headers that are required
for calling the function, or those that are specific to the
function:
<unistd.h> is required for the syscall() prototype.
<sys/syscall.h> is required for the syscall name SYS_xxx.
<linux/futex.h> is specific to this syscall.
However, uint32_t is generic enough that it shouldn't be
documented here. The system_data_types(7) page already documents
it, and is more precise about it. The same goes for timespec.
As a general rule a man[23] page should document the header that
includes the prototype, and all of the headers that define macros
that should be used with the call. However, the information about
types should be restricted to system_data_types(7) (and that page
should probably be improved by adding types), except for types
that are very specific to the call. Otherwise, we're duplicating
info and it's then harder to maintain, and probably outdated in
the future.
Signed-off-by: Alejandro Colomar <alx.manpages@gmail.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
This complements commit e3eba861bd.
Since we don't need syscall(2) anymore, we don't need SYS_* definitions.
Signed-off-by: Alejandro Colomar <alx.manpages@gmail.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
AT_EMPTY_PATH works with empty strings (""), but not with NULL
(or at least it's not obvious).
The relevant kernel code is the following:
linux$ sed -n 189,198p fs/namei.c
result->refcnt = 1;
/* The empty path is special. */
if (unlikely(!len)) {
if (empty)
*empty = 1;
if (!(flags & LOOKUP_EMPTY)) {
putname(result);
return ERR_PTR(-ENOENT);
}
}
Reported-by: Walter Harms <wharms@bfs.de>
Cc: Theodore Ts'o <tytso@mit.edu>
Cc: Adam Borowski <kilobyte@angband.pl>
Signed-off-by: Alejandro Colomar <alx.manpages@gmail.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
'C library/kernel differences' was added to BUGS incorrectly.
Fix it
Signed-off-by: Alejandro Colomar <alx.manpages@gmail.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
Despite my mention of this spawning a hilarious discussion
on IRC, this alignment restriction should be 128-bit, not
126-bit.
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: Alejandro Colomar <alx.manpages@gmail.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
Add a missing "to" in an "in order to" formulation.
Signed-off-by: Borislav Petkov <bp@suse.de>
Signed-off-by: Alejandro Colomar <alx.manpages@gmail.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
CIFS flock() locks behave differently than the standard. Give overview
of those differences.
Here is the rendered text:
CIFS details
In Linux kernels up to 5.4, flock() is not propagated over SMB. A file
with such locks will not appear locked for remote clients.
Since Linux 5.5, flock() locks are emulated with SMB byte-range locks
on the entire file. Similarly to NFS, this means that fcntl(2) and
flock() locks interact with one another. Another important side-effect
is that the locks are not advisory anymore: any IO on a locked file
will always fail with EACCES when done from a separate file descriptor.
This difference originates from the design of locks in the SMB proto-
col, which provides mandatory locking semantics.
Remote and mandatory locking semantics may vary with SMB protocol,
mount options and server type. See mount.cifs(8) for additional infor-
mation.
Signed-off-by: Aurelien Aptel <aaptel@suse.com>
Discussion: linux-man <https://lore.kernel.org/linux-man/20210302154831.17000-1-aaptel@suse.com/>
Signed-off-by: Alejandro Colomar <alx.manpages@gmail.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
In b0b19983d9 we removed
<sys/types.h>. For the same reasons there, remove now <sys/ipc.h>
from many pages.
If someone wonders why <sys/ipc.h> was needed, the reason was to
get all the definitions of IPC_* constants. However, that header
is now included by <sys/msg.h>, so it's not needed anymore to
explicitly include it. Quoting POSIX: "In addition, the
<sys/msg.h> header shall include the <sys/ipc.h> header."
There were some remaining cases where I forgot to remove
<sys/types.h>; remove them now too.
Signed-off-by: Alejandro Colomar <alx.manpages@gmail.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
AFAICS, all types and constants used by these functions are
defined in <fcntl.h>.
Signed-off-by: Alejandro Colomar <alx.manpages@gmail.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
A few architectures have a different call signature for pipe().
Since those architectures are the minority, place the prototype
at the end of the SYNOPSIS, rather than the start.
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
Userfaultfd write-protect mode is supported starting from Linux 5.7.
Acked-by: Mike Rapoport <rppt@linux.vnet.ibm.com>
Signed-off-by: Peter Xu <peterx@redhat.com>
[alx: ffix + srcfix]
Signed-off-by: Alejandro Colomar <alx.manpages@gmail.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
UFFD_FEATURE_THREAD_ID is supported in Linux 4.14.
Acked-by: Mike Rapoport <rppt@linux.vnet.ibm.com>
Signed-off-by: Peter Xu <peterx@redhat.com>
Signed-off-by: Alejandro Colomar <alx.manpages@gmail.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
Write-protect mode is supported starting from Linux 5.7.
Acked-by: Mike Rapoport <rppt@linux.vnet.ibm.com>
Signed-off-by: Peter Xu <peterx@redhat.com>
Signed-off-by: Alejandro Colomar <alx.manpages@gmail.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
UFFD_FEATURE_THREAD_ID is supported since Linux 4.14.
Acked-by: Mike Rapoport <rppt@linux.vnet.ibm.com>
Signed-off-by: Peter Xu <peterx@redhat.com>
[alx: srcfix]
Signed-off-by: Alejandro Colomar <alx.manpages@gmail.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
In this case there's a wrapper provided by libaio,
but this page documents the raw kernel syscall.
Signed-off-by: Alejandro Colomar <alx.manpages@gmail.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
<linux/unistd.h> is not needed. We need <unistd.h> for syscall(),
and <sys/syscall.h> for SYS_exit_group.
Signed-off-by: Alejandro Colomar <alx.manpages@gmail.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
Add <linux/fcntl.h>, which contains AT_* definitions used by
execveat().
Signed-off-by: Alejandro Colomar <alx.manpages@gmail.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
The CLONE_* constants seem to be available from either
<linux/sched.h> or <sched.h>, and since clone3() already
includes <linux/sched.h> for 'struct clone_args', <sched.h>
is not really needed, AFAICS; however, to avoid confusion,
I also included <sched.h> for clone3() for consistency:
clone() is getting CLONE_* from <sched.h>, and it would confuse
the reader if clone3() got the same CLONE_* constants from a
different header.
Signed-off-by: Alejandro Colomar <alx.manpages@gmail.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
AFAICS, there's no reason to include that.
All of the macros that this function uses
are already defined in the other headers.
Cc: glibc <libc-alpha@sourceware.org>
Signed-off-by: Alejandro Colomar <alx.manpages@gmail.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
The page didn't specify includes, and the syscalls are extinct, so
instead of adding incomplete information about includes, just
leave it without any includes.
Signed-off-by: Alejandro Colomar <alx.manpages@gmail.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
Only the include that provides the prototype doesn't need a comment.
Also sort the includes alphabetically.
Signed-off-by: Alejandro Colomar <alx.manpages@gmail.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
Only the one that provides the prototype doesn't need a comment.
Signed-off-by: Alejandro Colomar <alx.manpages@gmail.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
<linux/fs.h> doesn't seem to be needed!
Only the include that provides the prototype doesn't need a comment.
Also sort the includes alphabetically.
Signed-off-by: Alejandro Colomar <alx.manpages@gmail.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
Only the include that provides the prototype doesn't need a comment.
Also sort the includes alphabetically.
Signed-off-by: Alejandro Colomar <alx.manpages@gmail.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
Only the one that provides the prototype doesn't need a comment.
Signed-off-by: Alejandro Colomar <alx.manpages@gmail.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
[mtk: Alex's change switches the comment to the more generally used
form "Definition of..."]
Signed-off-by: Alejandro Colomar <alx.manpages@gmail.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
<sys/time.h> is not needed to get the function declaration nor any
constant used by the function. It was only needed (before
POSIX.1) to get 'struct timeval', but that information would be
more suited for system_data_types(7), and not for this page.
Signed-off-by: Alejandro Colomar <alx.manpages@gmail.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
<sys/time.h> is not required by any of the function declarations
or macro definitions used by these functions. It may be (or maybe
not) needed by some type inside the rlimit structure, but that
info belongs in system_data_types(7), not here.
Signed-off-by: Alejandro Colomar <alx.manpages@gmail.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
<sys/types.h> was only needed for size_t, AFAIK. That is already
(and more precisely) documented in system_data_types(7). Let's
remove it here, as it's not really needed for calling add_key().
Signed-off-by: Alejandro Colomar <alx.manpages@gmail.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
I couldn't find a reason for including <unistd.h>. All the macros
used by fcntl() are defined in <fcntl.h>. For comparison, FreeBSD
and OpenBSD don't specify <unistd.h> in their manual pages.
Signed-off-by: Alejandro Colomar <alx.manpages@gmail.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
This function never returns to its caller.
Signed-off-by: Alejandro Colomar <alx.manpages@gmail.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
In Linux kernel 5.12, a new mode flag, MPOL_F_NUMA_BALANCING, is
added to set_mempolicy() to optimize the page placement among the
NUMA nodes with the NUMA balancing mechanism even if the memory of
the applications is bound with MPOL_BIND. This patch updates the
man page for the new mode flag.
Related kernel commits:
bda420b985054a3badafef23807c4b4fa38a3dff
[mtk: Minor fixes to commit message]
Signed-off-by: "Huang, Ying" <ying.huang@intel.com>
Cc: "Michael Kerrisk" <mtk.manpages@gmail.com>
[ alx: srcfix ]
Signed-off-by: Alejandro Colomar <alx.manpages@gmail.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
Add a sentence explaining what dup2() does in terms of file
descriptors and open file descriptions.
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
Sometimes people are confused, thinking a file descriptor is just a
number. To help avoid such confusions, add text highlighting that
a file descriptor is an index to an entry in the process's FD table.
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
As can be seen by any number of StackOverflow questions, people
persistently misunderstand what dup() does, and the existing manual
page text, which talks of "copying" a file descriptor doesn't help.
Rewrite the text a little to try to prevent some of these
misunderstandings, in particular noting at the start that dup()
allocates a new file descriptor.
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
close_range() CLOSE_RANGE_USHARE triggers a call to dup_fd()
which in turn calls alloc_fdtable(), which checks that
sysctl_nr_open has not been exceeded.
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
The current example program can't really be used to demonstrate the
effect of close_range(). Replace it by a program that does show the
effect of this system call.
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
This documents close_range(2) based on information in
278a5fbaed89dacd04e9d052f4594ffd0e0585de,
60997c3d45d9a67daf01c56d805ae4fec37e0bd8, and
582f1fb6b721facf04848d2ca57f34468da1813e.
Reported-by: Christian Brauner <christian.brauner@ubuntu.com>
Signed-off-by: Stephen Kitt <steve@sk2.org>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
The manual pages are already inconsistent in which headers need
to be included. Right now, not all of the types used by a
function have their required header included in the SYNOPSIS.
If we were to add the headers required by all of the types used by
functions, the SYNOPSIS would grow too much. Not only it would
grow too much, but the information there would be less precise.
Having system_data_types(7) document each type with all the
information about required includes is much more precise, and the
info is centralized so that it's much easier to maintain.
So let's document only the include required for the function
prototype, and also the ones required for the macros needed to
call the function.
<sys/types.h> only defines types, not functions or constants, so
it doesn't belong to man[23] (function) pages at all.
I ignore if some old systems had headers that required you to
include <sys/types.h> *before* them (incomplete headers), but if
so, those implementations would be broken, and those headers
should probably provide some kind of warning. I hope this is not
the case.
[mtk: Already in 2001, POSIX.1 removed the requirement to
include <sys/types.h> for many APIs, so this patch seems
well past due.]
Acked-by: Zack Weinberg <zackw@panix.com>
Signed-off-by: Alejandro Colomar <alx.manpages@gmail.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
RESOLVE_CACHED allows an application to attempt a cache-only open
of a file. If this isn't possible, the request will fail with
-1/EAGAIN and the caller should retry without RESOLVE_CACHED set.
This will generally happen from a different context, where a slower
open operation can be performed.
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
POSIX specifies that _exit() and _Exit() shall not return.
Glibc uses __attribute__((__noreturn__)).
Let's use standard C11 'noreturn' in the manual page.
Signed-off-by: Alejandro Colomar <alx.manpages@gmail.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
Use the glibc prototypes instead of the kernel ones.
Exception: use 'int' instead of 'enum'.
......
.../glibc$ grep_glibc_prototype pciconfig_read
sysdeps/unix/sysv/linux/alpha/sys/io.h:72:
extern int pciconfig_read (unsigned long int __bus,
unsigned long int __dfn,
unsigned long int __off,
unsigned long int __len,
unsigned char *__buf) __THROW;
sysdeps/unix/sysv/linux/ia64/sys/io.h:57:
extern int pciconfig_read (unsigned long int __bus, unsigned long int __dfn,
unsigned long int __off, unsigned long int __len,
unsigned char *__buf);
.../glibc$ grep_glibc_prototype pciconfig_write
sysdeps/unix/sysv/linux/alpha/sys/io.h:78:
extern int pciconfig_write (unsigned long int __bus,
unsigned long int __dfn,
unsigned long int __off,
unsigned long int __len,
unsigned char *__buf) __THROW;
sysdeps/unix/sysv/linux/ia64/sys/io.h:61:
extern int pciconfig_write (unsigned long int __bus, unsigned long int __dfn,
unsigned long int __off, unsigned long int __len,
unsigned char *__buf);
.../glibc$ grep_glibc_prototype pciconfig_iobase
sysdeps/unix/sysv/linux/alpha/sys/io.h:66:
extern long pciconfig_iobase(enum __pciconfig_iobase_which __which,
unsigned long int __bus,
unsigned long int __dfn)
__THROW __attribute__ ((const));
.../glibc$
Signed-off-by: Alejandro Colomar <alx.manpages@gmail.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
All but the last parameters of t[g]kill() use 'pid_t',
both in the kernel and glibc. Fix them.
......
.../linux/linux$ grep_syscall tkill
kernel/signal.c:3870:
SYSCALL_DEFINE2(tkill, pid_t, pid, int, sig)
include/linux/syscalls.h:685:
asmlinkage long sys_tkill(pid_t pid, int sig);
.../linux/linux$
.../gnu/glibc$ grep_glibc_prototype tgkill
sysdeps/unix/sysv/linux/bits/signal_ext.h:29:
extern int tgkill (__pid_t __tgid, __pid_t __tid, int __signal);
.../gnu/glibc$
Signed-off-by: Alejandro Colomar <alx.manpages@gmail.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
The kernel syscall uses 'loff_t', but the glibc wrapper uses 'off64_t'.
Let's document the wrapper prototype, as in other pages.
......
.../glibc$ grep_glibc_prototype splice
sysdeps/unix/sysv/linux/bits/fcntl-linux.h:398:
extern __ssize_t splice (int __fdin, __off64_t *__offin, int __fdout,
__off64_t *__offout, size_t __len,
unsigned int __flags);
.../glibc$
Signed-off-by: Alejandro Colomar <alx.manpages@gmail.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
The type of fsgid is git_t, and not uid_t. Fix it.
......
.../glibc$ grep_glibc_prototype setfsgid
sysdeps/unix/sysv/linux/sys/fsuid.h:31:
extern int setfsgid (__gid_t __gid) __THROW;
.../glibc$
Signed-off-by: Alejandro Colomar <alx.manpages@gmail.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
"Mibibytes" is a misspelling of "mebibytes",
but let's use more familiar "MiB" instead.
Signed-off-by: Jakub Wilk <jwilk@jwilk.net>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
I just happened upon this inconsistent text while reading `man 2
execve`. The code in question landed in 2.6.23 as b6a2fea39318
("mm: variable length argument support").
Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
POSIX specifies that the parameters of timer_settime()
shall be 'restrict'. Glibc uses 'restrict' too.
Let's use it here too.
......
.../glibc$ grep_glibc_prototype timer_settime
time/time.h:242:
extern int timer_settime (timer_t __timerid, int __flags,
const struct itimerspec *__restrict __value,
struct itimerspec *__restrict __ovalue) __THROW;
.../glibc$
Signed-off-by: Alejandro Colomar <alx.manpages@gmail.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
Glibc uses 'restrict' for the types of the parameters of statx().
Let's use it here too.
......
.../glibc$ grep_glibc_prototype statx
io/bits/statx-generic.h:60:
int statx (int __dirfd, const char *__restrict __path, int __flags,
unsigned int __mask, struct statx *__restrict __buf)
__THROW __nonnull ((2, 5));
.../glibc$
Signed-off-by: Alejandro Colomar <alx.manpages@gmail.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
POSIX specifies that the parameters of sigaltstack()
shall be 'restrict'. Glibc uses 'restrict' too.
Let's use it here too.
......
.../glibc$ grep_glibc_prototype sigaltstack
signal/signal.h:320:
extern int sigaltstack (const stack_t *__restrict __ss,
stack_t *__restrict __oss) __THROW;
.../glibc$
Signed-off-by: Alejandro Colomar <alx.manpages@gmail.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
POSIX specifies that the parameters of getsockopt()
shall be 'restrict'. Glibc uses 'restrict' too.
Let's use it here too.
......
.../glibc$ grep_glibc_prototype getsockopt
socket/sys/socket.h:208:
extern int getsockopt (int __fd, int __level, int __optname,
void *__restrict __optval,
socklen_t *__restrict __optlen) __THROW;
.../glibc$
Signed-off-by: Alejandro Colomar <alx.manpages@gmail.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
POSIX specifies that the parameters of getpeername()
shall be 'restrict'. Glibc uses 'restrict' too.
Let's use it here too.
......
.../glibc$ grep_glibc_prototype getpeername
socket/sys/socket.h:130:
extern int getpeername (int __fd, __SOCKADDR_ARG __addr,
socklen_t *__restrict __len) __THROW;
.../glibc$
Signed-off-by: Alejandro Colomar <alx.manpages@gmail.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
The page used 'hint' and 'advice' synonymously. This leaves the
reader wondering if the terms mean the same thing, or different
things. They mean the same thing, so use just one term.
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
Rather than repeating the description of MADV_COLD and MADV_PAGEOUT
in two pages, centralize the discussion in madvise(2), and refer
from process_madvise(2) ro madvise(2).
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
Skimming open(2), I was surprised not to see tmpfs mentioned as a
filesystem supported by O_TMPFILE.
If I'm understanding correctly (I'm very possibly not!), tmpfs is
a filesystem built on shmem, so I think it's more correct (and
probably much more widely understandable) to refer to tmpfs here.
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
There are many slightly different prototypes for this syscall,
but none of them is like the documented one.
Of all the different prototypes,
let's document the asm-generic one.
This manual page was actually using a prototype similar to
mmap(2), but there's no glibc wrapper function called mmap2(2),
as the wrapper for this syscall is mmap(2). Therefore, the
documented prototype should be the kernel one.
......
.../linux$ grep_syscall mmap2
arch/csky/kernel/syscall.c:17:
SYSCALL_DEFINE6(mmap2,
unsigned long, addr,
unsigned long, len,
unsigned long, prot,
unsigned long, flags,
unsigned long, fd,
off_t, offset)
arch/microblaze/kernel/sys_microblaze.c:46:
SYSCALL_DEFINE6(mmap2, unsigned long, addr, unsigned long, len,
unsigned long, prot, unsigned long, flags, unsigned long, fd,
unsigned long, pgoff)
arch/nds32/kernel/sys_nds32.c:12:
SYSCALL_DEFINE6(mmap2, unsigned long, addr, unsigned long, len,
unsigned long, prot, unsigned long, flags,
unsigned long, fd, unsigned long, pgoff)
arch/powerpc/kernel/syscalls.c:60:
SYSCALL_DEFINE6(mmap2, unsigned long, addr, size_t, len,
unsigned long, prot, unsigned long, flags,
unsigned long, fd, unsigned long, pgoff)
arch/riscv/kernel/sys_riscv.c:37:
SYSCALL_DEFINE6(mmap2, unsigned long, addr, unsigned long, len,
unsigned long, prot, unsigned long, flags,
unsigned long, fd, off_t, offset)
arch/s390/kernel/sys_s390.c:49:
SYSCALL_DEFINE1(mmap2, struct s390_mmap_arg_struct __user *, arg)
arch/sparc/kernel/sys_sparc_32.c:101:
SYSCALL_DEFINE6(mmap2, unsigned long, addr, unsigned long, len,
unsigned long, prot, unsigned long, flags, unsigned long, fd,
unsigned long, pgoff)
arch/ia64/include/asm/unistd.h:30:
asmlinkage unsigned long sys_mmap2(
unsigned long addr, unsigned long len,
int prot, int flags,
int fd, long pgoff);
arch/ia64/kernel/sys_ia64.c:139:
asmlinkage unsigned long
sys_mmap2 (unsigned long addr, unsigned long len, int prot, int flags, int fd, long pgoff)
arch/m68k/kernel/sys_m68k.c:40:
asmlinkage long sys_mmap2(unsigned long addr, unsigned long len,
unsigned long prot, unsigned long flags,
unsigned long fd, unsigned long pgoff)
arch/parisc/kernel/sys_parisc.c:275:
asmlinkage unsigned long sys_mmap2(unsigned long addr, unsigned long len,
unsigned long prot, unsigned long flags, unsigned long fd,
unsigned long pgoff)
arch/powerpc/include/asm/syscalls.h:15:
asmlinkage long sys_mmap2(unsigned long addr, size_t len,
unsigned long prot, unsigned long flags,
unsigned long fd, unsigned long pgoff);
arch/sh/include/asm/syscalls.h:8:
asmlinkage long sys_mmap2(unsigned long addr, unsigned long len,
unsigned long prot, unsigned long flags,
unsigned long fd, unsigned long pgoff);
arch/sh/kernel/sys_sh.c:41:
asmlinkage long sys_mmap2(unsigned long addr, unsigned long len,
unsigned long prot, unsigned long flags,
unsigned long fd, unsigned long pgoff)
arch/sparc/kernel/systbls.h:23:
asmlinkage long sys_mmap2(unsigned long addr, unsigned long len,
unsigned long prot, unsigned long flags,
unsigned long fd, unsigned long pgoff);
include/asm-generic/syscalls.h:14:
asmlinkage long sys_mmap2(unsigned long addr, unsigned long len,
unsigned long prot, unsigned long flags,
unsigned long fd, unsigned long pgoff);
.../linux$
function grep_syscall()
{
if ! [ -v 1 ]; then
>&2 echo "Usage: ${FUNCNAME[0]} <syscall>";
return ${EX_USAGE};
fi
find * -type f \
|grep '\.c$' \
|sort -V \
|xargs pcregrep -Mn "(?s)^\w*SYSCALL_DEFINE.\(${1},.*?\)" \
|sed -E 's/^[^:]+:[0-9]+:/&\n/';
find * -type f \
|grep '\.[ch]$' \
|sort -V \
|xargs pcregrep -Mn "(?s)^asmlinkage\s+[\w\s]+\**sys_${1}\s*\(.*?\)" \
|sed -E 's/^[^:]+:[0-9]+:/&\n/';
}
Signed-off-by: Alejandro Colomar <alx.manpages@gmail.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
The documented prototype for mlock2() was a mix of the
glibc wrapper prototype and the kernel syscall prototype.
Let's document the glibc wrapper prototype, which is shown below.
......
.../glibc$ grep_glibc_prototype mlock2
sysdeps/unix/sysv/linux/bits/mman-shared.h:55:
int mlock2 (const void *__addr, size_t __length, unsigned int __flags) __THROW;
.../glibc$
function grep_glibc_prototype()
{
if ! [ -v 1 ]; then
>&2 echo "Usage: ${FUNCNAME[0]} <func>";
return ${EX_USAGE};
fi
find * -type f \
|grep '\.h$' \
|sort -V \
|xargs pcregrep -Mn \
"(?s)^[^\s#][\w\s]+\s+\**${1}\s*\([\w\s()[\]*,]*?(...)?\)[\w\s()]*;" \
|sed -E 's/^[^:]+:[0-9]+:/&\n/';
}
Signed-off-by: Alejandro Colomar <alx.manpages@gmail.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
There seems to be no reason <unistd.h> is shown here, so remove it.
Signed-off-by: Jonathan Wakely <jwakely@redhat.com>
Signed-off-by: Alejandro Colomar <alx.manpages@gmail.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
These pages have the odd wording 'the external variable errno',
which does not occur in other pages. Make these pages conform with
the norm.
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
Calling ipc() directly would be a rather unusual thing to do,
so add some text to emphasize that point.
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
I filed a bug against glibc
requesting the wrapper for the new syscall.
Glibc bug: <https://sourceware.org/bugzilla/show_bug.cgi?id=27359>
Signed-off-by: Alejandro Colomar <alx.manpages@gmail.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
The 'advice' subsection fell in the middle of other text in the
DESCRIPTION, which is a little confusing. Instead, move that
subsection to the end of the DESCRIPTION, and make some other
minor text reorganization so that related details are placed in
the same paragraphs.
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
A real minus can be cut and pasted...
THere are a few exceptions that gave been excluded in the this
change. For example, where there' is a string such as "<p1-name>",
where p1-name is soome sort of pseudo-identifier.
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
Verified from reading the kernel source and looking at the source
of mount(8). Surprisingly, this has not documented after so many
years.
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
For the alternate signal stack to be cleared, CLONE_VM should and
CLONE_VFORK should not be specified.
[mtk: fixes my commit 52e5819c41]
Signed-off-by: Johannes Wellhöfer <johannes.wellhofer@gmail.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
It's been a long time sine kernel 3.19.
There's still no glibc wrapper.
......
$ grep -rn 'execveat *(' glibc/
$
Signed-off-by: Alejandro Colomar <alx.manpages@gmail.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
Glibc uses 'void *' instead of 'char *'.
And the prototype is declared in <sys/cachectl.h>.
......
$ syscall='cacheflush';
$ ret='int';
$ find glibc/ -type f -name '*.h' \
|xargs pcregrep -Mn "(?s)^[\w\s]*${ret}\s*${syscall}\s*\(.*?;";
glibc/sysdeps/unix/sysv/linux/nios2/sys/cachectl.h:27:
extern int cacheflush (void *__addr, const int __nbytes, const int __op) __THROW;
glibc/sysdeps/unix/sysv/linux/mips/sys/cachectl.h:35:
extern int cacheflush (void *__addr, const int __nbytes, const int __op) __THROW;
glibc/sysdeps/unix/sysv/linux/arc/sys/cachectl.h:30:
extern int cacheflush (void *__addr, int __nbytes, int __op) __THROW;
glibc/sysdeps/unix/sysv/linux/csky/sys/cachectl.h:30:
extern int cacheflush (void *__addr, const int __nbytes,
const int __op) __THROW;
Signed-off-by: Alejandro Colomar <alx.manpages@gmail.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
Expand the epoll_wait() page with epoll_pwait2(), an epoll_wait()
variant that takes a struct timespec to enable nanosecond
resolution timeout.
Signed-off-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
A file descriptor is an int so it should be stored through an int
pointer while parent_tid should have the same type as child_tid
which is pid_t pointer.
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
This is implied in every other manual page. There is no need to
state it explicitly in these pages.
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
Fix a glitch in commit ff91beca5b.
Reported-by: Alejandro Colomar (man-pages) <alx.manpages@gmail.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
Since kernel commit a280d6dc77eb
("ipc/sem: introduce semctl(SEM_STAT_ANY)"),
it only skips read access check when using SEM_STAT_ANY command.
And it should use the semid_ds struct instead of seminfo struct.
Fix this.
Signed-off-by: Yang Xu <xuyang2018.jy@cn.fujitsu.com>
Acked-by: Manfred Spraul <manfred@colorfullife.com>
Signed-off-by: Alejandro Colomar <alx.manpages@gmail.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
In the RETURN VALUE sections, a number of different wordings
are used in to describe the fact that 'errno' is set on error.
There's no reason for the difference in wordings, since the same
thing is being described in each case. Switch to a standard
wording that is the same as FreeBSD and similar to the wording
used in POSIX.1.
In this change, miscellaneous descriptions of the setting
of 'errno' are reworded to the norm of "is set to indicate
the error".
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
In the RETURN VALUE sections, a number of different wordings
are used in to describe the fact that 'errno' is set on error.
There's no reason for the difference in wordings, since the same
thing is being described in each case. Switch to a standard
wording that is the same as FreeBSD and similar to the wording
used in POSIX.1.
In this change, reword various cases saying that 'errno' is set
"appropriately" to "is set to indicate the error".
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
In the RETURN VALUE sections, a number of different wordings
are used in to describe the fact that 'errno' is set on error.
There's no reason for the difference in wordings, since the same
thing is being described in each case. Switch to a standard
wording that is the same as FreeBSD and similar to the wording
used in POSIX.1.
In this change, fix some instances stating that 'errno' is set
"appropriately" to instead say "to indicate the error".
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
In the RETURN VALUE sections, a number of different wordings
are used in to describe the fact that 'errno' is set on error.
There's no reason for the difference in wordings, since the same
thing is being described in each case. Switch to a standard
wording that is the same as FreeBSD and similar to the wording
used in POSIX.1.
In this change, "to indicate the cause of the error"
is changed to "to indicate the error".
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
The current mark-up renders poorly. To resolve this, move
the type information into a separate line.
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
Since we are using .nf/.fi to bracket FTM info, escaping
space characters serves no space and clutters the source.
Reported-by: Alejandro Colomar (man-pages) <alx.manpages@gmail.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
Make the formatting more consistent inside the tables in the
ATTRIBUTES sections. Make the source code more uniform; in
particular, eliminate the use of custom tweaks using
'lbwNN'/'lwNN' and .br macros. In addition, ensure that
hyphenation and text justification do not occur inside the tables.
This is a script-driven edit:
[[
PAGE_LIST=$(git grep -l 'SH ATTRIBUTES' man[23])
# Strip out any preexisting .sp/.br/.ad macros
sed -i '/SH ATTR/,/^\.SH/{/^\.sp/d; /^\.br/d; /\.ad/d}' $PAGE_LIST
# Eliminate any use of 'wNN' in tables; default first column
# to fill unused space
sed -i '/SH ATTR/,/^\.SH/s/lbw[0-9]*/lb/g' $PAGE_LIST
sed -i '/SH ATTR/,/^\.SH/s/lw[0-9]*/l/g' $PAGE_LIST
sed -i '/SH ATTR/,/^\.SH/s/^lb /lbx /' $PAGE_LIST
# Nest the tables inside ".ad l"+".nh" and ".hy"+".ad"+".sp 1"
# ".ad l" ==> no right justification of text in table cells
# ".nh" ==> No hyphenation in table cells
# ".sp 1" ==> ensure a blank line before the next section heading
sed -i '/SH ATTR/,/^\.SH/{/\.TS/i.ad l\n.nh
}' $PAGE_LIST
sed -i '/SH ATTR/,/^\.SH/{/\.TE/a.hy\n.ad\n.sp 1
}' $PAGE_LIST
# In a few of the tables, the third column has a lot of text, so
# make that column wide (rather than the first column)
sed -i '/^lbx/{s/lbx/lb/;s/lb$/lbx/}' \
man3/bindresvport.3 \
man3/fmtmsg.3 man3/gethostbyname.3 man3/getlogin.3 \
man3/getnetent.3 man3/getprotoent.3 man3/getpwent.3 \
man3/getservent.3 man3/getspnam.3 man3/getutent.3 man3/glob.3 \
man3/login.3 \
man3/setnetgrent.3 \
man3/wordexp.3
]]
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
In the SYNOPSIS, a long function prototype may need to be
continued over to the next line. The continuation line is
indented according to the following rules:
1. If there is a single such prototype that needs to be continued,
then align the continuation line so that when the page is
rendered on a fixed-width font device (e.g., on an xterm) the
continuation line starts just below the start of the argument
list in the line above. (Exception: the indentation may be
adjusted if necessary to prevent a very long continuation line
or a further continuation line where the function prototype is
very long.)
Thus:
int tcsetattr(int fd, int optional_actions,
const struct termios *termios_p);
2. But, where multiple functions in the SYNOPSIS require
continuation lines, and the function names have different
lengths, then align all continuation lines to start in the
same column. This provides a nicer rendering in PDF output
(because the SYNOPSIS uses a variable width font where
spaces render narrower than most characters).
Thus:
int getopt(int argc, char * const argv[],
const char *optstring);
int getopt_long(int argc, char * const argv[],
const char *optstring,
const struct option *longopts, int *longindex);
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
Since _BSD_SOURCE is obsolete for quite some time now,
it should not be listed as the first FTM for lstat().
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
Generally, place '||' at start of a line, rather than the end of
the previous line.
Rationale: this placement clearly indicates that that each piece
is an alternative.
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
Different source styles are used in different pages to achieve the
same formatted output, and in some cases the source mark-up is a
rather convoluted combination of .RS/.RE/.TP/.PD macros. Simplify
this greatly, and unify all of the pages to use more or less the
same source code style. This makes the source code rather easier
to read, and may simplify future scripted global changes.
The feature test macro info is currently bracketed by .nf/.fi
pairs. This is not strictly necessary (i.e., it makes no
difference to the rendered output), but for the moment we keep
these "brackets" in case they may be replaced with something else.
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
The majority of pages use .nf/.fi in SYNOPSIS, but there are
still many that don't and use .br to achieve newlines. Fix many
of those. This brings greater consistency to the pages, which
eases editing and may ease future scripted edits to the pages.
Many of these changes were script-assisted, with some additional
manual edits.
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
Yet more clean-ups after commit
15d6565317.
Reported-by: Alejandro Colomar (man-pages) <alx.manpages@gmail.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
Since glibc 2.29, there is a wrapper for getcpu(2).
The wrapper has only 2 arguments, omitting the unused
third system call argument. Rework the manual page
to reflect this.
Reported-by: Alejandro Colomar <alx.manpages@gmail.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
Most pages use 'unsigned int' (and the kernel too).
Make them all do so.
$ find man? -type f \
| xargs sed -i \
-e 's/unsigned \*/unsigned int */g'
-e 's/unsigned "/unsigned int "/g';
Signed-off-by: Alejandro Colomar <alx.manpages@gmail.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
The use of vertical white space in the SYNOPSIS sections
is rather inconsistent. Make it more consistent, subject to the
following heuristics:
* Prefer no blank lines between function signatures by default.
* Where many functions are defined in the SYNOPSIS, add blank
lines where needed to improve readability, possibly by using
blank lines to separate logical groups of functions.
Reported-by: Alejandro Colomar (man-pages) <alx.manpages@gmail.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
Bring a bit more consistency to Feature Test Macro information
(mainly .PP between differnt FTM lists).
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
Use .PP (which gives a bit of vertical white space) rather than
.br to separate functions in Feature Test Macro requirement lists.
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
The Linux kernel uses 'unsigned int' instead of 'int' for the
'flags' parameter. As glibc provides no wrapper, use the same
type the kernel uses.
......
$ syscall='delete_module';
$ find linux/ -type f -name '*.c' \
|xargs pcregrep -Mn "(?s)^[\w_]*SYSCALL_DEFINE.\(${syscall},.*?\)";
linux/kernel/module.c:977:
SYSCALL_DEFINE2(delete_module, const char __user *, name_user,
unsigned int, flags)
Signed-off-by: Alejandro Colomar <alx.manpages@gmail.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
See previous commit.
This commit normalizes texts under sections other than SYNOPSIS
(most of them in NOTES).
Signed-off-by: Ganimedes Colomar <gacoan.linux@gmail.com>
Cowritten-by: Alejandro Colomar <alx.manpages@gmail.com>
Signed-off-by: Alejandro Colomar <alx.manpages@gmail.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
To easily distinguish documentation about glibc wrappers from
documentation about kernel syscalls, let's have a normalized
'Note' in the SYNOPSIS, and a further explanation in the page body
(NOTES in most of them), as already happened in many (but not all)
of the manual pages for syscalls without a wrapper. Furthermore,
let's normalize the messages, following membarrier.2 (because it's
already quite extended), so that it's easy to use grep to find
those pages.
To find these pages, we used:
$ grep -rn wrapper man? | sort -V
and
$ grep -rni support.*glibc | sort -V
delete_module.2, init_module.2: glibc 2.23 is no longer
maintained, so we changed the notes about wrappers, to say that
there are no glibc wrappers for these system calls; see NOTES.
We didn't fix some obsolete pages such as create_module.2.
Signed-off-by: Ganimedes Colomar <gacoan.linux@gmail.com>
Cowritten-by: Alejandro Colomar <alx.manpages@gmail.com>
Signed-off-by: Alejandro Colomar <alx.manpages@gmail.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
Rationale:
$ man 7 man-pages 2>/dev/null | sed -n /Paragraphs/,/^$/p
Paragraphs should be separated by suitable markers (usually
either .PP or .IP). Do not separate paragraphs using blank
lines, as this results in poor rendering in some output
formats (such as PostScript and PDF).
Fix:
$ sed -i -e '1,/^\.EX/s/^$/.PP/' -e '/^\.EE/,/^\.EX/s/^$/.PP/' man?/*
And then some manual adjustments.
Signed-off-by: Alejandro Colomar <alx.manpages@gmail.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
I noticed this while working on some silly "hello, world"
programs, see https://git.sr.ht/~phf/hello-again if you're
curious. Disassembling sh4 code showed trap #31 all over the
place but the syscall(2) man page talked about trap #0x17 and
friends. Checking the kernel sources I got lucky in
arch/sh/kernel/entry-common.S where in commit 3623d138213ae Rich
Felker clarifies the situation.
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
Reported-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alejandro Colomar <alx.manpages@gmail.com>
Cc: Martin Sebor <msebor@redhat.com>
Cc: Dave Martin <Dave.Martin@arm.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
The Linux kernel uses 'int' instead of 'long' for the return type.
As glibc provides no wrapper, use the same type the kernel uses.
......
$ grep -n wrapper man-pages/man2/subpage_prot.2
40:There is no glibc wrapper for this system call; see NOTES.
99:Glibc does not provide a wrapper for this system call; call it using
$ grep -rn SYSCALL_DEFINE.*subpage_prot linux/;
linux/arch/powerpc/mm/book3s64/subpage_prot.c:190:
SYSCALL_DEFINE3(subpage_prot, unsigned long, addr,
$ sed -n /SYSCALL.*subpage_prot/,/^}/p \
linux/arch/powerpc/mm/book3s64/subpage_prot.c \
|grep return;
return -ENOENT;
return -EINVAL;
return -EINVAL;
return 0;
return -EFAULT;
return -EFAULT;
return err;
$ sed -n /SYSCALL.*subpage_prot/,/^}/p \
linux/arch/powerpc/mm/book3s64/subpage_prot.c \
|grep '\<err\>';
int err;
err = -ENOMEM;
err = -ENOMEM;
err = 0;
return err;
Signed-off-by: Alejandro Colomar <alx.manpages@gmail.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
This paragraph is a little bit hidden at the end of DESCRIPTION;
make it a little more prominent.
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
Linux kernel commit aae8a97d3ec30788790d1720b71d76fd8eb44b73 (part
of kernel release v2.6.39) added a check to disallow creating a
hardlink to an unlinked file.
The manual page already describes the trick of using
AT_SYMLINK_FOLLOW as an alternative to AT_EMPTY_PATH, and for
AT_EMPTY_PATH the manual page already notes that it "will
generally not work if the file has a link count of zero". However,
the precise error (ENOENT) is not mentioned, and the error case
isn't mentioned in the ERRORS section at all.
This makes it easy to overlook the fact that the AT_SYMLINK_FOLLOW
trick on /proc/self/fd/NN won't work on deleted files, as
evidenced by the follow message (which turns up when googling
"linkat deleted ENOENT"):
https://groups.google.com/g/linux.kernel/c/zZO4lqqwp64
Signed-off-by: Mathias Rav <m@git.strova.dk>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
The Linux kernel uses 'pid_t' instead of 'long' for the return type.
As glibc provides no wrapper, use the same types the kernel uses.
$ sed -n 34,36p man-pages/man2/set_tid_address.2
.PP
.IR Note :
There is no glibc wrapper for this system call; see NOTES.
$ grep -rn 'SYSCALL_DEFINE.*set_tid_address' linux/
linux/kernel/fork.c:1632:
SYSCALL_DEFINE1(set_tid_address, int __user *, tidptr)
$ sed -n 1632,1638p linux/kernel/fork.c
SYSCALL_DEFINE1(set_tid_address, int __user *, tidptr)
{
current->clear_child_tid = tidptr;
return task_pid_vnr(current);
}
$ grep -rn 'task_pid_vnr(struct' linux/
linux/include/linux/sched.h:1374:
static inline pid_t task_pid_vnr(struct task_struct *tsk)
Signed-off-by: Alejandro Colomar <alx.manpages@gmail.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
{.IR var [x]} -> {.I var[x]}
There were around 15 entries of the former,
and around 360 of the latter.
Found using:
$ grep -rn '^\.I[ |R].* \[.*\]' |sort
Signed-off-by: Alejandro Colomar <alx.manpages@gmail.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
Alejandro Colomar