vasilito
b9874d0941
Add redbear-usb-storage-check in-guest binary that validates USB mass storage read and write I/O: discovers /scheme/disk/ devices, writes a test pattern to sector 2048, reads it back, verifies match, restores original content. Updates test-usb-storage-qemu.sh with write-proof verification step. Includes all accumulated Red Bear OS work: kernel patches, relibc patches, driver infrastructure, DRM/GPU, KDE recipes, firmware, validation tooling, build system hardening, and documentation.
39 lines
1.0 KiB
C
39 lines
1.0 KiB
C
#include <assert.h>
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#include <dlfcn.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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int main(void) {
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void *handle = dlopen("libfoobar.so", RTLD_LAZY | RTLD_LOCAL);
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if (!handle) {
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printf("dlopen(libfoobar.so): %s\n", dlerror());
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return EXIT_FAILURE;
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}
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assert(dlsym(handle, "BAR") != NULL);
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assert(dlsym(handle, "FOO") != NULL);
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// not in the global scope
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assert(dlsym(RTLD_DEFAULT, "BAR") == NULL);
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assert(dlsym(RTLD_DEFAULT, "FOO") == NULL);
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void *self = dlopen(NULL, RTLD_LAZY | RTLD_LOCAL);
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if (!self) {
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printf("dlopen(NULL): %s\n", dlerror());
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return EXIT_FAILURE;
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}
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assert(dlsym(self, "FOO") == NULL);
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assert(dlsym(self, "BAR") == NULL);
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assert(dlclose(self) == 0);
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// Promote the library to the global scope.
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assert(dlopen("libfoobar.so", /* RTLD_NOLOAD |*/ RTLD_NOW | RTLD_GLOBAL));
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assert(dlsym(RTLD_DEFAULT, "FOO") != NULL);
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assert(dlsym(RTLD_DEFAULT, "BAR") != NULL);
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return EXIT_SUCCESS;
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}
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