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| author | Michael Kerrisk <mtk.manpages@gmail.com> | 2010-11-22 08:50:49 +0100 |
|---|---|---|
| committer | Michael Kerrisk <mtk.manpages@gmail.com> | 2010-11-22 08:52:47 +0100 |
| commit | ae67a2cdf3ee4e77774704370dec6f10a92e49c9 (patch) | |
| tree | 00459dbfcbafd4fe56cac60333a9368cf8f0bc7c | |
| parent | 80978cba040183cbb40ee725c2f7cabf50f51406 (diff) | |
| download | man-pages-ae67a2cdf3ee4e77774704370dec6f10a92e49c9.tar.gz | |
setfsuid.2: Add NOTES explaining 32-bit system calls added in Linux 2.4
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
| -rw-r--r-- | man2/setfsuid.2 | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/man2/setfsuid.2 b/man2/setfsuid.2 index 737fc9cc12..f6ea56137d 100644 --- a/man2/setfsuid.2 +++ b/man2/setfsuid.2 @@ -26,7 +26,7 @@ .\" Modified, 27 May 2004, Michael Kerrisk <mtk.manpages@gmail.com> .\" Added notes on capability requirements .\" -.TH SETFSUID 2 2008-12-05 "Linux" "Linux Programmer's Manual" +.TH SETFSUID 2 2010-11-22 "Linux" "Linux Programmer's Manual" .SH NAME setfsuid \- set user identity used for file system checks .SH SYNOPSIS @@ -89,6 +89,16 @@ the system call. Note that at the time this system call was introduced, a process could send a signal to a process with the same effective user ID. Today signal permission handling is slightly different. + +The original Linux +.BR setfsuid () +system call supported only 16-bit user IDs. +Subsequently, Linux 2.4 added +.BR setfsuid32 () +supporting 32-bit IDs. +The glibc +.BR setfsuid () +wrapper function transparently deals with the variation across kernel versions. .SH BUGS No error messages of any kind are returned to the caller. At the very |