PR_SET_MM_ARG_START2const
Modify kernel memory map descriptor fields
Usage
#include <linux/prctl.h> /* Definition of PR_* constants */ #include <sys/prctl.h>
int prctl(PR_SET_MM, PR_SET_MM_ARG_START, unsigned long addr, 0L, 0L); int prctl(PR_SET_MM, PR_SET_MM_ARG_END, unsigned long addr, 0L, 0L); int prctl(PR_SET_MM, PR_SET_MM_ENV_START, unsigned long addr, 0L, 0L); int prctl(PR_SET_MM, PR_SET_MM_ENV_END, unsigned long addr, 0L, 0L);
Library
Standard C library (libc, -lc)
Overview
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Set the address above which the program command line is placed. |
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Set the address below which the program command line is placed. |
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Set the address above which the program environment is placed. |
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Set the address below which the program environment is placed. |
The address passed with these calls should belong to a process stack area. Thus, the corresponding memory area must be readable, writable, and (depending on the kernel configuration) have the MAP_GROWSDOWN attribute set (see mmap(2)).
Return value
On success, 0 is returned. On error, -1 is returned, and errno is set to indicate the error.
Errors
- EINVAL
-
addr is greater than
TASK_SIZE(the limit on the size of the user address space for this architecture).
Releases
2 releases since Debian 13 (Trixie); the text changed 1 time.