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| author |   guenther <guenther@openbsd.org> | 2014-04-21 08:46:59 +0000 |
|---|---|---|
| committer | guenther <guenther@openbsd.org> | 2014-04-21 08:46:59 +0000 |
| commit | eb15c8a0d4ebd367e5b3e29df4ca5c0336bb4ce0 (patch) | |
| tree | 41fa4da92dd2b68068c88e29363c88cc3fa389dd /lib/libc/stdlib | |
| parent | Bye bye *hosts.equiv. (diff) | |
| download | wireguard-openbsd-eb15c8a0d4ebd367e5b3e29df4ca5c0336bb4ce0.tar.xz wireguard-openbsd-eb15c8a0d4ebd367e5b3e29df4ca5c0336bb4ce0.zip | |
Correctly document the return value of getenv(3)
From Ben Cornett (ben (at) lantern.is)
Diffstat (limited to 'lib/libc/stdlib')
| -rw-r--r-- | lib/libc/stdlib/getenv.3 | 14 |
1 files changed, 8 insertions, 6 deletions
diff --git a/lib/libc/stdlib/getenv.3 b/lib/libc/stdlib/getenv.3 index 5239d1b0d5c..23335595161 100644 --- a/lib/libc/stdlib/getenv.3 +++ b/lib/libc/stdlib/getenv.3 @@ -29,9 +29,9 @@ .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF .\" SUCH DAMAGE. .\" -.\" $OpenBSD: getenv.3,v 1.19 2013/06/05 03:39:23 tedu Exp $ +.\" $OpenBSD: getenv.3,v 1.20 2014/04/21 08:46:59 guenther Exp $ .\" -.Dd $Mdocdate: June 5 2013 $ +.Dd $Mdocdate: April 21 2014 $ .Dt GETENV 3 .Os .Sh NAME @@ -102,11 +102,13 @@ function deletes all instances of the variable name pointed to by .Fa name from the list. .Sh RETURN VALUES -These functions -return zero if successful; otherwise the global variable -.Va errno -is set to indicate the error and \-1 is returned. +.Rv -std putenv setenv unsetenv .Pp +The +.Fn getenv +function returns a pointer to the requested value, or +.Dv NULL +if it could not be found. If .Fn getenv is successful, the string returned should be considered read-only. |