diff options
Diffstat (limited to 'elf')
| -rw-r--r-- | elf/Makefile | 10 | ||||
| -rw-r--r-- | elf/next.c | 44 | ||||
| -rw-r--r-- | elf/nextmod1.c | 20 | ||||
| -rw-r--r-- | elf/nextmod2.c | 6 |
4 files changed, 77 insertions, 3 deletions
diff --git a/elf/Makefile b/elf/Makefile index 2932183028..0fc81e021f 100644 --- a/elf/Makefile +++ b/elf/Makefile @@ -51,7 +51,8 @@ distribute := $(rtld-routines:=.c) dynamic-link.h do-rel.h dl-machine.h \ constload2.c constload3.c filtmod1.c filtmod2.c \ nodlopenmod.c nodelete.c nodelmod1.c nodelmod2.c \ nodelmod3.c nodelmod4.c nodlopen.c dl-osinfo.h \ - reldepmod1.c reldepmod2.c reldepmod3.c reldepmod4.c + reldepmod1.c reldepmod2.c reldepmod3.c reldepmod4.c \ + nextmod1.c nextmod2.c include ../Makeconfig @@ -92,7 +93,7 @@ endif ifeq (yes,$(build-shared)) tests = loadtest restest1 preloadtest loadfail multiload origtest resolvfail \ constload1 order $(tests-vis-$(have-protected)) noload filter unload \ - reldep reldep2 reldep3 $(tests-nodelete-$(have-z-nodelete)) \ + reldep reldep2 reldep3 next $(tests-nodelete-$(have-z-nodelete)) \ $(tests-nodlopen-$(have-z-nodlopen)) tests-vis-yes = vismain tests-nodelete-yes = nodelete @@ -103,7 +104,7 @@ modules-names = testobj1 testobj2 testobj3 testobj4 testobj5 testobj6 \ dep1 dep2 dep3 dep4 $(modules-vis-$(have-protected)) \ $(modules-nodelete-$(have-z-nodelete)) \ $(modules-nodlopen-$(have-z-nodlopen)) filtmod1 filtmod2 \ - reldepmod1 reldepmod2 reldepmod3 reldepmod4 + reldepmod1 reldepmod2 reldepmod3 reldepmod4 nextmod1 nextmod2 modules-vis-yes = vismod1 vismod2 vismod3 modules-nodelete-yes = nodelmod1 nodelmod2 nodelmod3 nodelmod4 modules-nodlopen-yes = nodlopenmod @@ -245,6 +246,7 @@ $(objpfx)dep1.so: $(objpfx)dep2.so $(objpfx)dep4.so $(objpfx)dep2.so: $(objpfx)dep3.so $(objpfx)dep4.so $(objpfx)dep4.so: $(objpfx)dep3.so $(objpfx)nodelmod3.so: $(objpfx)nodelmod4.so +$(objpfx)nextmod1.so: $(libdl) # filtmod1.so has a special rule $(filter-out $(objpfx)filtmod1.so, $(test-modules)): $(objpfx)%.so: $(objpfx)%.os @@ -336,3 +338,5 @@ $(objpfx)reldep2.out: $(objpfx)reldepmod1.so $(objpfx)reldepmod3.so $(objpfx)reldep3: $(libdl) $(objpfx)reldep3.out: $(objpfx)reldepmod1.so $(objpfx)reldepmod4.so + +$(objpfx)next: $(objpfx)nextmod1.so $(objpfx)nextmod2.so $(libdl) diff --git a/elf/next.c b/elf/next.c new file mode 100644 index 0000000000..a7ca2bdbc2 --- /dev/null +++ b/elf/next.c @@ -0,0 +1,44 @@ +#include <stdio.h> + + +extern int successful_rtld_next_test (void); +extern void *failing_rtld_next_use (void); + + +int +do_test (void) +{ + int result; + void *addr; + + /* First try call a function which uses RTLD_NEXT and calls that + function. */ + result = successful_rtld_next_test (); + if (result == 42) + { + puts ("RTLD_NEXT seems to work for existing functions"); + result = 0; + } + else + { + printf ("Heh? `successful_rtld_next_test' returned %d\n", result); + result = 1; + } + + /* Next try a function which tries to get a function with RTLD_NEXT + but that fails. This dlsym() call should return a NULL pointer + and do nothing else. */ + addr = failing_rtld_next_use (); + if (addr == NULL) + puts ("dlsym returned NULL for non-existing function. Good"); + else + { + puts ("dlsym found something !?"); + result = 1; + } + + return result; +} + +#define TEST_FUNCTION do_test () +#include "../test-skeleton.c" diff --git a/elf/nextmod1.c b/elf/nextmod1.c new file mode 100644 index 0000000000..3549c75174 --- /dev/null +++ b/elf/nextmod1.c @@ -0,0 +1,20 @@ +#include <dlfcn.h> + +int +successful_rtld_next_test (void) +{ + int (*fp) (void); + + /* Get the next function... */ + fp = (int (*) (void)) dlsym (RTLD_NEXT, __FUNCTION__); + + /* ...and simply call it. */ + return fp (); +} + + +void * +failing_rtld_next_use (void) +{ + return dlsym (RTLD_NEXT, __FUNCTION__); +} diff --git a/elf/nextmod2.c b/elf/nextmod2.c new file mode 100644 index 0000000000..790e0ce9fe --- /dev/null +++ b/elf/nextmod2.c @@ -0,0 +1,6 @@ +/* Very elaborated function. */ +int +successful_rtld_next_test (void) +{ + return 42; +} |