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#include <stdbool.h>
#include <stdint.h>
#include <stdlib.h>
#include <stddef.h>
#include <string.h>
#include <errno.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <fcntl.h>
#include <sched.h>
#if !CPUINFO_MOCK
#error This file should be built only in mock mode
#endif
#include <cpuinfo-mock.h>
#include <arm/linux/api.h>
#include <arm/midr.h>
#include <cpuinfo/log.h>
static struct cpuinfo_mock_file* cpuinfo_mock_files = NULL;
static uint32_t cpuinfo_mock_file_count = 0;
void CPUINFO_ABI cpuinfo_mock_filesystem(struct cpuinfo_mock_file* files) {
cpuinfo_log_info("filesystem mocking enabled");
uint32_t file_count = 0;
while (files[file_count].path != NULL) {
/* Indicate that file is not opened */
files[file_count].offset = SIZE_MAX;
file_count += 1;
}
cpuinfo_mock_files = files;
cpuinfo_mock_file_count = file_count;
}
int CPUINFO_ABI cpuinfo_mock_open(const char* path, int oflag) {
if (cpuinfo_mock_files == NULL) {
cpuinfo_log_warning("cpuinfo_mock_open called without mock filesystem; redictering to open");
return open(path, oflag);
}
for (uint32_t i = 0; i < cpuinfo_mock_file_count; i++) {
if (strcmp(cpuinfo_mock_files[i].path, path) == 0) {
if (oflag != O_RDONLY) {
errno = EACCES;
return -1;
}
if (cpuinfo_mock_files[i].offset != SIZE_MAX) {
errno = ENFILE;
return -1;
}
cpuinfo_mock_files[i].offset = 0;
return (int) i;
}
}
errno = ENOENT;
return -1;
}
int CPUINFO_ABI cpuinfo_mock_close(int fd) {
if (cpuinfo_mock_files == NULL) {
cpuinfo_log_warning("cpuinfo_mock_close called without mock filesystem; redictering to close");
return close(fd);
}
if ((unsigned int) fd >= cpuinfo_mock_file_count) {
errno = EBADF;
return -1;
}
if (cpuinfo_mock_files[fd].offset == SIZE_MAX) {
errno = EBADF;
return -1;
}
cpuinfo_mock_files[fd].offset = SIZE_MAX;
return 0;
}
ssize_t CPUINFO_ABI cpuinfo_mock_read(int fd, void* buffer, size_t capacity) {
if (cpuinfo_mock_files == NULL) {
cpuinfo_log_warning("cpuinfo_mock_read called without mock filesystem; redictering to read");
return read(fd, buffer, capacity);
}
if ((unsigned int) fd >= cpuinfo_mock_file_count) {
errno = EBADF;
return -1;
}
if (cpuinfo_mock_files[fd].offset == SIZE_MAX) {
errno = EBADF;
return -1;
}
const size_t offset = cpuinfo_mock_files[fd].offset;
size_t count = cpuinfo_mock_files[fd].size - offset;
if (count > capacity) {
count = capacity;
}
memcpy(buffer, (void*) cpuinfo_mock_files[fd].content + offset, count);
cpuinfo_mock_files[fd].offset += count;
return (ssize_t) count;
}
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