diff options
author | wes <wes@FreeBSD.org> | 1999-11-28 22:41:50 +0000 |
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committer | wes <wes@FreeBSD.org> | 1999-11-28 22:41:50 +0000 |
commit | 7cf3e9fa26c2aa7049ece490c34b16ab439eb40c (patch) | |
tree | 20c99cbbd2a5da22a1914809fe4e2942c92838dc /lib/libc/sys | |
parent | 6ed770d48894580ab774368b42e9851442d48788 (diff) | |
download | FreeBSD-src-7cf3e9fa26c2aa7049ece490c34b16ab439eb40c.zip FreeBSD-src-7cf3e9fa26c2aa7049ece490c34b16ab439eb40c.tar.gz |
Document the getlogin_r function.
Diffstat (limited to 'lib/libc/sys')
-rw-r--r-- | lib/libc/sys/getlogin.2 | 24 |
1 files changed, 22 insertions, 2 deletions
diff --git a/lib/libc/sys/getlogin.2 b/lib/libc/sys/getlogin.2 index bb82a70..122431d5 100644 --- a/lib/libc/sys/getlogin.2 +++ b/lib/libc/sys/getlogin.2 @@ -37,12 +37,16 @@ .Os BSD 4.4 .Sh NAME .Nm getlogin , +.Nm getlogin_r , .Nm setlogin .Nd get/set login name .Sh SYNOPSIS .Fd #include <unistd.h> .Ft char * .Fn getlogin void +.Fd #include <sys/param.h> +.Ft char * +.Fn getlogin_r "char *name" "int len" .Ft int .Fn setlogin "const char *name" .Sh DESCRIPTION @@ -60,6 +64,18 @@ for example when .Xr su 1 is used). .Pp +.Fn getlogin_r +provides the same service as +.Fn getlogin +except the caller must provide the buffer +.Fa name +with length +.Fa len +bytes +to hold the result. The buffer should be at least +.Dv MAXLOGNAME +bytes in length. +.Pp .Fn Setlogin sets the login name of the user associated with the current session to .Fa name . @@ -115,8 +131,12 @@ precautions to prevent security violations. If a call to .Fn getlogin succeeds, it returns a pointer to a null-terminated string in a static buffer. -If the name has not been set, it returns -.Dv NULL . +.Fn getlogin_r +returns a pointer to the buffer passed in by the caller on success. +Both return +.Dv NULL +if the name has not been set. +.Pp If a call to .Fn setlogin succeeds, a value of 0 is returned. If |