diff options
| author | Alejandro Colomar <alx@kernel.org> | 2024-05-29 00:13:07 +0200 |
|---|---|---|
| committer | Alejandro Colomar <alx@kernel.org> | 2024-05-31 01:40:56 +0200 |
| commit | 57cea436b5d51016541f6a766ba8902eb1010b36 (patch) | |
| tree | d2fc88501495eacbc153a0d5bbb191c29591e937 | |
| parent | d88dc33e4bba757625536250d66243f39c463166 (diff) | |
| download | man-pages-57cea436b5d51016541f6a766ba8902eb1010b36.tar.gz | |
PR_SET_MM.2const, PR_SET_MM_START_BRK.2const: Split PR_SET_MM_START_BRK from PR_SET_MM(2const)
Signed-off-by: Alejandro Colomar <alx@kernel.org>
| -rw-r--r-- | man/man2const/PR_SET_MM.2const | 17 | ||||
| -rw-r--r-- | man/man2const/PR_SET_MM_START_BRK.2const | 61 |
2 files changed, 64 insertions, 14 deletions
diff --git a/man/man2const/PR_SET_MM.2const b/man/man2const/PR_SET_MM.2const index 333560989d..297066d1d4 100644 --- a/man/man2const/PR_SET_MM.2const +++ b/man/man2const/PR_SET_MM.2const @@ -43,18 +43,8 @@ is one of the options below. .B PR_SET_MM_END_DATA .TQ .B PR_SET_MM_START_STACK -.TP +.TQ .B PR_SET_MM_START_BRK -Set the address above which the program heap can be expanded with -.BR brk (2) -call. -The address must be greater than the ending address of -the current program data segment. -In addition, the combined size of the resulting heap and -the size of the data segment can't exceed the -.B RLIMIT_DATA -resource limit (see -.BR setrlimit (2)). .TP .B PR_SET_MM_BRK Set the current @@ -201,8 +191,6 @@ is greater than .B EINVAL .I op is -.B PR_SET_MM_START_BRK -or .BR PR_SET_MM_BRK , and .I arg3 @@ -232,4 +220,5 @@ option enabled. .BR PR_SET_MM_END_CODE (2const), .BR PR_SET_MM_START_DATA (2const), .BR PR_SET_MM_END_DATA (2const), -.BR PR_SET_MM_START_STACK (2const) +.BR PR_SET_MM_START_STACK (2const), +.BR PR_SET_MM_START_BRK (2const) diff --git a/man/man2const/PR_SET_MM_START_BRK.2const b/man/man2const/PR_SET_MM_START_BRK.2const new file mode 100644 index 0000000000..bd12f445e7 --- /dev/null +++ b/man/man2const/PR_SET_MM_START_BRK.2const @@ -0,0 +1,61 @@ +.\" Copyright 2012, Cyrill Gorcunov <gorcunov@openvz.org> +.\" Copyright 2012, 2013, 2015, Michael Kerrisk <mtk.manpages@gmail.com> +.\" Copyright 2024, Alejandro Colomar <alx@kernel.org> +.\" +.\" SPDX-License-Identifier: Linux-man-pages-copyleft +.\" +.TH PR_SET_MM_START_BRK 2const (date) "Linux man-pages (unreleased)" +.SH NAME +PR_SET_MM_START_BRK +\- +modify kernel memory map descriptor fields +.SH LIBRARY +Standard C library +.RI ( libc ", " \-lc ) +.SH SYNOPSIS +.nf +.B #include <sys/prctl.h> +.P +.BI "int prctl(PR_SET_MM, PR_SET_MM_START_BRK, unsigned long " addr ", 0L, 0L);" +.fi +.SH DESCRIPTION +Set the address above which the program heap can be expanded with +.BR brk (2) +call. +.P +The address must be greater than the ending address of +the current program data segment. +In addition, +the combined size of the resulting heap and the data segment +can't exceed the +.B RLIMIT_DATA +resource limit (see +.BR setrlimit (2)). +.SH RETURN VALUE +On success, +0 is returned. +On error, \-1 is returned, and +.I errno +is set to indicate the error. +.SH ERRORS +.TP +.B EINVAL +.I addr +is greater than +.B TASK_SIZE +(the limit on the size of the user address space for this architecture). +.TP +.B EINVAL +.I addr +is less than or equal to the end of the data segment +or specifies a value that would cause the +.B RLIMIT_DATA +resource limit to be exceeded. +.SH STANDARDS +Linux. +.SH HISTORY +Linux 3.3. +.\" commit 028ee4be34a09a6d48bdf30ab991ae933a7bc036 +.SH SEE ALSO +.BR prctl (2), +.BR PR_SET_MM (2const) |