函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:mm\nommu.c Create Date:2022-07-27 16:03:50
Last Modify:2020-03-17 21:26:27 Copyright©Brick
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函数名称：ksys_mmap_pgoff

函数原型：unsigned long ksys_mmap_pgoff(unsigned long addr, unsigned long len, unsigned long prot, unsigned long flags, unsigned long fd, unsigned long pgoff)

返回类型：unsigned long

参数：

类型参数名称
unsigned longaddr
unsigned longlen
unsigned longprot
unsigned longflags
unsigned longfd
unsigned longpgoff
1329  struct file * file = NULL
1330  retval等于负EBADF
1332  audit_mmap_fd(fd, flags)
1333  如果非flags按位与don't use a file 的值则
1334  file等于fget(fd)
1335  如果非file则转到:out
1339  flags与等于mark it as an executable 按位或ETXTBSY 的值的反
1341  retval等于vm_mmap_pgoff(file, addr, len, prot, flags, pgoff)
1343  如果file则fput(file)
1345  out :
1346  返回:retval
调用者
名称描述
SYSCALL_DEFINE6
SYSCALL_DEFINE1