Function report

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:fs\read_write.c Create Date:2022-07-28 20:01:27
Last Modify:2020-03-18 10:18:51 Copyright©Brick
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Annotation kernel can get tool activityDownload SCCTChinese

Name:SYSCALL_DEFINE4

Proto:SYSCALL_DEFINE4(sendfile64, int, out_fd, int, in_fd, loff_t __user *, offset, size_t, count)

Type:

Parameter:Nothing

1516  If offset Then
1517  If Value for the false possibility is greater at compile time(copy_from_user( & pos, offset, sizeof(loff_t))) Then Return -EFAULT
1519  ret = do_sendfile(out_fd, in_fd, & pos, count, 0)
1520  If Value for the false possibility is greater at compile time(Write a simple value into user space(pos, offset)) Then Return -EFAULT
1522  Return ret
1525  Return do_sendfile(out_fd, in_fd, NULL, count, 0)