Index: head/lib/libc/gen/Makefile.inc =================================================================== --- head/lib/libc/gen/Makefile.inc +++ head/lib/libc/gen/Makefile.inc @@ -339,7 +339,8 @@ dlopen.3 dlclose.3 \ dlopen.3 dlerror.3 \ dlopen.3 dlfunc.3 \ - dlopen.3 dlsym.3 + dlopen.3 dlsym.3 \ + dlopen.3 dlvsym.3 MLINKS+=err.3 err_set_exit.3 \ err.3 err_set_file.3 \ err.3 errc.3 \ Index: head/lib/libc/gen/dlopen.3 =================================================================== --- head/lib/libc/gen/dlopen.3 +++ head/lib/libc/gen/dlopen.3 @@ -32,13 +32,14 @@ .\" @(#) dlopen.3 1.6 90/01/31 SMI .\" $FreeBSD$ .\" -.Dd July 7, 2017 +.Dd January 2, 2019 .Dt DLOPEN 3 .Os .Sh NAME .Nm dlopen , .Nm fdlopen , .Nm dlsym , +.Nm dlvsym , .Nm dlfunc , .Nm dlerror , .Nm dlclose @@ -53,6 +54,8 @@ .Fn fdlopen "int fd" "int mode" .Ft void * .Fn dlsym "void * restrict handle" "const char * restrict symbol" +.Ft void * +.Fn dlvsym "void * restrict handle" "const char * restrict symbol" "const char * restrict version" .Ft dlfunc_t .Fn dlfunc "void * restrict handle" "const char * restrict symbol" .Ft char * @@ -74,7 +77,8 @@ .Fa path , returning a descriptor that can be used for later references to the object in calls to -.Fn dlsym +.Fn dlsym , +.Fn dlvsym and .Fn dlclose . If @@ -300,6 +304,16 @@ .Fn dlerror . .Pp The +.Fn dlvsym +function behaves like +.Fn dlsym , +but takes an extra argument +.Fa version : +a null-terminated character string which is used to request a specific version +of +.Fa symbol . +.Pp +The .Fn dlfunc function implements all of the behavior of @@ -328,6 +342,7 @@ .Fn dladdr , .Fn dlinfo , .Fn dlsym , +.Fn dlvsym , .Fn dlfunc , or .Fn dlclose . @@ -375,7 +390,10 @@ option to .Xr ld 1 for symbols defined in the executable to become visible to -.Fn dlsym . +.Fn dlsym , +.Fn dlvsym +or +.Fn dlfunc .Pp Other ELF platforms require linking with .Lb libdl @@ -397,6 +415,7 @@ .Fn dlopen , .Fn fdlopen , .Fn dlsym , +.Fn dlvsym , and .Fn dlfunc functions