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Index: lib/libc/net/Makefile.inc
===================================================================
--- lib/libc/net/Makefile.inc
+++ lib/libc/net/Makefile.inc
@@ -61,7 +61,9 @@
MLINKS+=gethostbyname.3 endhostent.3 gethostbyname.3 gethostbyaddr.3 \
gethostbyname.3 gethostbyname2.3 gethostbyname.3 gethostent.3 \
gethostbyname.3 herror.3 gethostbyname.3 hstrerror.3 \
- gethostbyname.3 sethostent.3
+ gethostbyname.3 sethostent.3 \
+ gethostbyname.3 gethostbyname_r.3 gethostbyname.3 gethostbyname2_r.3 \
+ gethostbyname.3 gethostbyaddr_r.3
MLINKS+=getifaddrs.3 freeifaddrs.3
MLINKS+=getifmaddrs.3 freeifmaddrs.3
MLINKS+=getipnodebyname.3 getipnodebyaddr.3 getipnodebyname.3 freehostent.3
Index: lib/libc/net/gethostbyname.3
===================================================================
--- lib/libc/net/gethostbyname.3
+++ lib/libc/net/gethostbyname.3
@@ -39,7 +39,10 @@
.Nm sethostent ,
.Nm endhostent ,
.Nm herror ,
-.Nm hstrerror
+.Nm hstrerror ,
+.Nm gethostbyname_r ,
+.Nm gethostbyname2_r ,
+.Nm gethostbyaddr_r
.Nd get network host entry
.Sh LIBRARY
.Lb libc
@@ -62,6 +65,12 @@
.Fn herror "const char *string"
.Ft const char *
.Fn hstrerror "int err"
+.Ft int
+.Fn gethostbyname_r "const char *name" "struct hostent *he" "char *buffer" "size_t buflen" "struct hostent **result" "int *h_errnop"
+.Ft int
+.Fn gethostbyname2_r "const char *name" "int af" "struct hostent *he" "char *buffer" "size_t buflen" "struct hostent **result" "int *h_errnop"
+.Ft int
+.Fn gethostbyaddr_r "const void *addr" "socklen_t len" "int af" "struct hostent *hp" "char *buf" "size_t buflen" "struct hostent **result" "int *h_errno"p
.Sh DESCRIPTION
.Bf -symbolic
The
@@ -227,6 +236,26 @@
value of the
.Fa err
argument.
+.Pp
+Functions with the
+.Em _r
+suffix provide reentrant versions of their respective counterparts.
+The caller must supply five additional parameters: a
+.Vt struct hostent
+variable to be filled on success, a
+.Va buffer
+of
+.Va buflen
+bytes in size, a
+.Vt struct hostent
+.Va result
+variable that will point to the result on success or be set to
+.Dv NULL
+on failure or if the name is not found.
+The
+.Va h_errnop
+variable will be filled with the error code if any.
+All these functions return 0 on success.
.Sh FILES
.Bl -tag -width /etc/nsswitch.conf -compact
.It Pa /etc/hosts

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