From fc53809803cd2bc2434e312b19a18fa36776da12 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Wed, 12 Jun 2024 05:50:40 +0200 Subject: Adding upstream version 256. Signed-off-by: Daniel Baumann --- src/shared/dlfcn-util.c | 66 ------------------------------------------------- 1 file changed, 66 deletions(-) delete mode 100644 src/shared/dlfcn-util.c (limited to 'src/shared/dlfcn-util.c') diff --git a/src/shared/dlfcn-util.c b/src/shared/dlfcn-util.c deleted file mode 100644 index 8022f55..0000000 --- a/src/shared/dlfcn-util.c +++ /dev/null @@ -1,66 +0,0 @@ -/* SPDX-License-Identifier: LGPL-2.1-or-later */ - -#include "dlfcn-util.h" - -static int dlsym_many_or_warnv(void *dl, int log_level, va_list ap) { - void (**fn)(void); - - /* Tries to resolve a bunch of function symbols, and logs an error about if it cannot resolve one of - * them. Note that this function possibly modifies the supplied function pointers if the whole - * operation fails. */ - - while ((fn = va_arg(ap, typeof(fn)))) { - void (*tfn)(void); - const char *symbol; - - symbol = va_arg(ap, typeof(symbol)); - - tfn = (typeof(tfn)) dlsym(dl, symbol); - if (!tfn) - return log_full_errno(log_level, - SYNTHETIC_ERRNO(ELIBBAD), - "Can't find symbol %s: %s", symbol, dlerror()); - *fn = tfn; - } - - return 0; -} - -int dlsym_many_or_warn_sentinel(void *dl, int log_level, ...) { - va_list ap; - int r; - - va_start(ap, log_level); - r = dlsym_many_or_warnv(dl, log_level, ap); - va_end(ap); - - return r; -} - -int dlopen_many_sym_or_warn_sentinel(void **dlp, const char *filename, int log_level, ...) { - _cleanup_(dlclosep) void *dl = NULL; - int r; - - if (*dlp) - return 0; /* Already loaded */ - - dl = dlopen(filename, RTLD_LAZY); - if (!dl) - return log_debug_errno(SYNTHETIC_ERRNO(EOPNOTSUPP), - "%s is not installed: %s", filename, dlerror()); - - log_debug("Loaded '%s' via dlopen()", filename); - - va_list ap; - va_start(ap, log_level); - r = dlsym_many_or_warnv(dl, log_level, ap); - va_end(ap); - - if (r < 0) - return r; - - /* Note that we never release the reference here, because there's no real reason to. After all this - * was traditionally a regular shared library dependency which lives forever too. */ - *dlp = TAKE_PTR(dl); - return 1; -} -- cgit v1.2.3