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lseek64.3: srcfix: add some comments to remind myself of some details 

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
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Michael Kerrisk 2020-11-23 07:26:10 +01:00
parent 7c1a416d65
commit 90f1c92fd3
1 changed files with 12 additions and 0 deletions
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man3/lseek64.3
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@ -170,6 +170,18 @@ system call.
Instead, they have an Instead, they have an
.BR lseek (2) .BR lseek (2)
system call that supports 64-bit file offsets. system call that supports 64-bit file offsets.
.\" In arch/x86/entry/syscalls/syscall_32.tbl,
.\" we see the following line:
.\"
.\" 140 i386 _llseek sys_llseek
.\"
.\" This is essentially telling us that 'sys_llseek' (the name generated
.\" by SYSCALL_DEFINE5(llseek...)) is exposed to user-space as system call
.\" number 140, and that system call number will (IIUC) be exposed in
.\" autogenerated headers with the name "__NR__llseek" (i.e., "_llseek").
.\" The "i386" is telling us that this happens in i386 (32-bit Intel).
.\" There is nothing equivalent on x86-64, because 64 bit systems don't
.\" need an _llseek system call.
.SH ATTRIBUTES .SH ATTRIBUTES
For an explanation of the terms used in this section, see For an explanation of the terms used in this section, see
.BR attributes (7). .BR attributes (7).