LDP
/
man-pages
mirror of https://github.com/mkerrisk/man-pages
0
1
Fork 0
Code Releases Activity

memfd_create.2: srcfix: start new sentences on new lines; rewrap source lines 

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
This commit is contained in:
Michael Kerrisk 2015-01-08 06:47:42 +01:00
parent 73fc0b5354
commit cb5b73cc47
1 changed files with 16 additions and 13 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

29
man2/memfd_create.2
View File

@ -26,12 +26,14 @@ memfd_create \- create an anonymous file
.BI "int memfd_create(const char *" name ", unsigned int " flags ");"
.SH DESCRIPTION
.BR memfd_create ()
creates an anonymous file and returns a file-descriptor to it. The file behaves
like regular files, thus can be modified, truncated, memory-mapped and more.
creates an anonymous file and returns a file-descriptor to it.
The file behaves like regular files, thus can be modified,
truncated, memory-mapped and more.
However, unlike regular files it lives in main memory and has a volatile
backing storage. Once all references to the file are dropped, it is
automatically released. Anonymous memory is used for all backing pages of the
file. Therefore, they are subject to the same restrictions as other anonymous
backing storage.
Once all references to the file are dropped, it is automatically released.
Anonymous memory is used for all backing pages of the file.
Therefore, they are subject to the same restrictions as other anonymous
memory allocations like
.BR mmap (2)
with
@ -43,9 +45,9 @@ is used as internal file-name and will occur as such in
.IR /proc/self/fd/ .
The name is always prefixed with
.BR memfd:
and serves only debugging purposes. Names do not affect the behavior of the
memfd, and as such multiple files can have the same name without any side
effects.
and serves only debugging purposes.
Names do not affect the behavior of the memfd,
and as such multiple files can have the same name without any side effects.
The following values may be bitwise ORed in
.IR flags
@ -60,7 +62,8 @@ See the description of the
.B O_CLOEXEC
flag in
.BR open (2)
for reasons why this may be useful. Furthermore,
for reasons why this may be useful.
Furthermore,
.B O_LARGEFILE
is always set for memfds.
.TP
@ -71,8 +74,9 @@ with
.B F_ADD_SEALS
and
.BR F_GET_SEALS )
on this file. The initial set of seals is empty. If this flag is not set, the
initial set of seals will be
on this file.
The initial set of seals is empty.
If this flag is not set, the initial set of seals will be
.B F_SEAL_SEAL
and as such no other seals can be set on the file.
.PP
@ -107,8 +111,7 @@ An unsupported value was specified in one of the arguments.
The per-process limit on open file descriptors has been reached.
.TP
.B ENFILE
The system-wide limit on the total number of open files has been
reached.
The system-wide limit on the total number of open files has been reached.
.TP
.B EFAULT
The name given in