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| author |   Florian Weimer <fweimer@redhat.com> | 2019-06-28 10:15:30 +0200 |
|---|---|---|
| committer | Florian Weimer <fweimer@redhat.com> | 2019-06-28 10:15:38 +0200 |
| commit | 17432d7150bdab3bce2ea66c70ad6c920f54077a (patch) | |
| tree | 40b7cdb0bc63aeadf880368c1bdf1918d6e159d7 /support | |
| parent | io: Remove copy_file_range emulation [BZ #24744] (diff) | |
| download | glibc-17432d7150bdab3bce2ea66c70ad6c920f54077a.tar.gz glibc-17432d7150bdab3bce2ea66c70ad6c920f54077a.tar.bz2 glibc-17432d7150bdab3bce2ea66c70ad6c920f54077a.zip | |
support: Add xdlvsym function
Diffstat (limited to 'support')
| -rw-r--r-- | support/xdlfcn.c | 20 | ||||
| -rw-r--r-- | support/xdlfcn.h | 1 |
2 files changed, 21 insertions, 0 deletions
diff --git a/support/xdlfcn.c b/support/xdlfcn.c index b2e5c21134..11fe4896d1 100644 --- a/support/xdlfcn.c +++ b/support/xdlfcn.c @@ -51,6 +51,26 @@ xdlsym (void *handle, const char *symbol) return sym; } +void * +xdlvsym (void *handle, const char *symbol, const char *version) +{ + /* Clear any pending errors. */ + dlerror (); + + void *sym = dlvsym (handle, symbol, version); + + if (sym == NULL) + { + const char *error = dlerror (); + if (error != NULL) + FAIL_EXIT1 ("error: dlvsym: %s\n", error); + /* If there was no error, we found a NULL symbol. Return the + NULL value in this case. */ + } + + return sym; +} + void xdlclose (void *handle) { diff --git a/support/xdlfcn.h b/support/xdlfcn.h index c9cd810a8a..7f8d4930fc 100644 --- a/support/xdlfcn.h +++ b/support/xdlfcn.h @@ -27,6 +27,7 @@ __BEGIN_DECLS void *xdlopen (const char *filename, int flags); void *xdlmopen (Lmid_t lmid, const char *filename, int flags); void *xdlsym (void *handle, const char *symbol); +void *xdlvsym (void *handle, const char *symbol, const char *version); void xdlclose (void *handle); __END_DECLS |