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MUNMAP(2) | System Calls Manual | MUNMAP(2) |
NAME¶
munmap
—
remove a mapping
LIBRARY¶
Standard C Library (libc, -lc)SYNOPSIS¶
#include
<sys/mman.h>
int
munmap
(void
*addr, size_t
len);
DESCRIPTION¶
Themunmap
() system call deletes the mappings
for the specified address range, and causes further references to addresses
within the range to generate invalid memory references.
RETURN VALUES¶
Themunmap
() function returns the
value 0 if successful; otherwise the value -1 is returned and
the global variable errno is set to indicate
the error.
ERRORS¶
Themunmap
() system call will fail if:
- [
EINVAL
] - The addr argument was not page aligned, the len argument was zero or negative, or some part of the region being unmapped is outside the valid address range for a process.
SEE ALSO¶
madvise(2), mincore(2), mmap(2), mprotect(2), msync(2), getpagesize(3)HISTORY¶
Themunmap
() system call first appeared in
4.4BSD.May 27, 1994 | Debian |