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author | ru <ru@FreeBSD.org> | 2002-08-09 11:06:03 +0000 |
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committer | ru <ru@FreeBSD.org> | 2002-08-09 11:06:03 +0000 |
commit | e54851cdbe118d95c6a05e84a4c97868b208dbc7 (patch) | |
tree | 008514fa8dc108b35cc1f52ca1d819ef1de4b15f /lib/libc/gen/dlopen.3 | |
parent | e185ee0111b1ebdd0d21de40e29b81a830a8ec1a (diff) | |
download | FreeBSD-src-e54851cdbe118d95c6a05e84a4c97868b208dbc7.zip FreeBSD-src-e54851cdbe118d95c6a05e84a4c97868b208dbc7.tar.gz |
mdoc(7) police: laundry.
Diffstat (limited to 'lib/libc/gen/dlopen.3')
-rw-r--r-- | lib/libc/gen/dlopen.3 | 23 |
1 files changed, 14 insertions, 9 deletions
diff --git a/lib/libc/gen/dlopen.3 b/lib/libc/gen/dlopen.3 index a26a6cf..a60c7aa 100644 --- a/lib/libc/gen/dlopen.3 +++ b/lib/libc/gen/dlopen.3 @@ -123,7 +123,8 @@ from all other shared objects. .It Dv RTLD_LOCAL Symbols in this shared object and its DAG of needed objects will be available for resolving undefined references only from other objects -in the same DAG. This is the default, but it may be specified +in the same DAG. +This is the default, but it may be specified explicitly with this flag. .It Dv RTLD_TRACE When set, causes dynamic linker to exit after loading all objects @@ -161,7 +162,8 @@ is called with the special .Dv NULL , it is interpreted as a reference to the executable or shared object from which the call -is being made. Thus a shared object can reference its own symbols. +is being made. +Thus a shared object can reference its own symbols. .Pp If .Fn dlsym @@ -169,7 +171,8 @@ is called with the special .Fa handle .Dv RTLD_DEFAULT , the search for the symbol follows the algorithm used for resolving -undefined symbols when objects are loaded. The objects searched are +undefined symbols when objects are loaded. +The objects searched are as follows, in the given order: .Bl -enum .It @@ -232,12 +235,12 @@ implements all of the behavior of .Fn dlsym , but has a return type which can be cast to a function pointer without triggering compiler diagnostics. -.Po Fn dlsym +.Fn ( dlsym returns a data pointer; in the C standard, conversions between -data and function pointer types are undefined. Some compilers and +data and function pointer types are undefined. +Some compilers and .Xr lint 1 -utilities warn about such casts. -.Pc +utilities warn about such casts.) The precise return type of .Fn dlfunc is unspecified; applications must cast it to an appropriate function pointer @@ -256,7 +259,8 @@ If no such error has occurred, returns a null pointer. At each call to .Fn dlerror , -the error indication is reset. Thus in the case of two calls +the error indication is reset. +Thus in the case of two calls to .Fn dlerror , where the second call follows the first immediately, the second call @@ -296,7 +300,8 @@ for symbols defined in the executable to become visible to .Pp In previous implementations, it was necessary to prepend an underscore to all external symbols in order to gain symbol -compatibility with object code compiled from the C language. This is +compatibility with object code compiled from the C language. +This is still the case when using the (obsolete) .Fl aout option to the C language compiler. |