Function report |
Source Code:mm\mmap.c |
Create Date:2022-07-28 14:48:30 |
Last Modify:2020-03-12 14:18:49 | Copyright©Brick |
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Annotation kernel can get tool activity | Download SCCT | Chinese |
Name:ksys_mmap_pgoff
Proto:unsigned long ksys_mmap_pgoff(unsigned long addr, unsigned long len, unsigned long prot, unsigned long flags, unsigned long fd, unsigned long pgoff)
Type:unsigned long
Parameter:
Type | Parameter | Name |
---|---|---|
unsigned long | addr | |
unsigned long | len | |
unsigned long | prot | |
unsigned long | flags | |
unsigned long | fd | |
unsigned long | pgoff |
1562 | If Not (flags & don't use a file ) Then |
1563 | audit_mmap_fd(fd, flags) |
1567 | If is_file_hugepages(file) Then len = @a is a power of 2 value (len, huge_page_size(hstate_file(file))) |
1570 | If Value for the false possibility is greater at compile time(flags & create a huge page mapping && !is_file_hugepages(file)) Then Go to out_fput |
1572 | Else if flags & create a huge page mapping Then |
1573 | struct user_struct * user = NULL |
1576 | hs = hstate_sizelog((flags >> Huge page size encoding when MAP_HUGETLB is specified, and a huge page* size other than the default is desired) & MAP_HUGE_MASK) |
1580 | len = @a is a power of 2 value (len, huge_page_size(hs)) |
1595 | flags &= ~(mark it as an executable | ETXTBSY ) |
1598 | out_fput : |
1601 | Return retval |
Name | Describe |
---|---|
SYSCALL_DEFINE6 | |
SYSCALL_DEFINE1 | |
SYSCALL_DEFINE6 | |
SYSCALL_DEFINE1 |
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