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| author | Alejandro Colomar <alx@kernel.org> | 2024-05-28 18:33:27 +0200 |
|---|---|---|
| committer | Alejandro Colomar <alx@kernel.org> | 2024-05-31 01:40:55 +0200 |
| commit | 0c68fe6ecd791584e5a5c42008a9f5b0378558e4 (patch) | |
| tree | b95596beddaa917ddf6fb3b5225a63234e2c017d | |
| parent | 562986af96d3d1129dcc4c2098c9953465ca1e58 (diff) | |
| download | man-pages-0c68fe6ecd791584e5a5c42008a9f5b0378558e4.tar.gz | |
PR_SET_MM.2const: Tweak after split
Signed-off-by: Alejandro Colomar <alx@kernel.org>
| -rw-r--r-- | man/man2const/PR_SET_MM.2const | 78 |
1 files changed, 24 insertions, 54 deletions
diff --git a/man/man2const/PR_SET_MM.2const b/man/man2const/PR_SET_MM.2const index ab70949e72..039442eb3e 100644 --- a/man/man2const/PR_SET_MM.2const +++ b/man/man2const/PR_SET_MM.2const @@ -1,10 +1,9 @@ .\" 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 .\" -.\" 2012-04 Cyrill Gorcunov, Document PR_SET_MM -.\" .TH PR_SET_MM 2const (date) "Linux man-pages (unreleased)" .SH NAME PR_SET_MM @@ -17,12 +16,9 @@ Standard C library .nf .B #include <sys/prctl.h> .P -.BI "int prctl(int " op ", ...);" +.BI "int prctl(PR_SET_MM, long " op ", ...);" .fi .SH DESCRIPTION -.TP -.BR PR_SET_MM " (since Linux 3.3)" -.\" commit 028ee4be34a09a6d48bdf30ab991ae933a7bc036 Modify certain kernel memory map descriptor fields of the calling process. Usually these fields are set by the kernel and dynamic loader (see @@ -30,27 +26,13 @@ Usually these fields are set by the kernel and dynamic loader (see for more information) and a regular application should not use this feature. However, there are cases, such as self-modifying programs, where a program might find it useful to change its own memory map. -.IP +.P The calling process must have the .B CAP_SYS_RESOURCE capability. The value in -.I arg2 -is one of the options below, while -.I arg3 -provides a new value for the option. -The -.I arg4 -and -.I arg5 -arguments must be zero if unused. -.IP -Before Linux 3.10, -.\" commit 52b3694157e3aa6df871e283115652ec6f2d31e0 -this feature is available only if the kernel is built with the -.B CONFIG_CHECKPOINT_RESTORE -option enabled. -.RS +.I op +is one of the options below. .TP .B PR_SET_MM_START_CODE Set the address above which the program text can run. @@ -196,7 +178,6 @@ argument should be a pointer to an unsigned int. This feature is available only if the kernel is built with the .B CONFIG_CHECKPOINT_RESTORE option enabled. -.RE .SH RETURN VALUE On success, 0 is returned. @@ -208,19 +189,12 @@ is set to indicate the error. .B EACCES .I op is -.BR PR_SET_MM , -and -.I arg2 -is .BR PR_SET_MM_EXE_FILE , the file is not executable. .TP .B EBADF .I op is -.BR PR_SET_MM , -.I arg2 -is .BR PR_SET_MM_EXE_FILE , and the file descriptor passed in .I arg3 @@ -229,32 +203,23 @@ is not valid. .B EBUSY .I op is -.BR PR_SET_MM , -.I arg2 -is .BR PR_SET_MM_EXE_FILE , and this the second attempt to change the .IR /proc/ pid /exe symbolic link, which is prohibited. .TP .B EINVAL -.I arg2 -is not a valid value for this -.IR op . +.I op +is not a valid value. .TP .B EINVAL -.I op -is -.BR PR_SET_MM , -and one of the following is true -.RS -.IP \[bu] 3 .I arg3 is greater than .B TASK_SIZE -(the limit on the size of the user address space for this architecture); -.IP \[bu] -.I arg2 +(the limit on the size of the user address space for this architecture). +.TP +.B EINVAL +.I op is .BR PR_SET_MM_START_CODE , .BR PR_SET_MM_END_CODE , @@ -262,9 +227,10 @@ is .BR PR_SET_MM_END_DATA , or .BR PR_SET_MM_START_STACK , -and the permissions of the corresponding memory area are not as required; -.IP \[bu] -.I arg2 +and the permissions of the corresponding memory area are not as required. +.TP +.B EINVAL +.I op is .B PR_SET_MM_START_BRK or @@ -275,17 +241,21 @@ 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. -.RE .TP .B EPERM -.I op -is -.BR PR_SET_MM , -and the caller does not have the +The caller does not have the .B CAP_SYS_RESOURCE capability. .SH STANDARDS Linux. .SH HISTORY +Linux 3.3. +.\" commit 028ee4be34a09a6d48bdf30ab991ae933a7bc036 +.P +Before Linux 3.10, +.\" commit 52b3694157e3aa6df871e283115652ec6f2d31e0 +this feature is available only if the kernel is built with the +.B CONFIG_CHECKPOINT_RESTORE +option enabled. .SH SEE ALSO .BR prctl (2) |