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46 lines
1.0 KiB
46 lines
1.0 KiB
#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <errno.h>
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#define BUFFER_SIZE 4096
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char buffer[BUFFER_SIZE];
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#define CPUINFO_PATH "/proc/cpuinfo"
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int main(int argc, char** argv) {
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int file = open(CPUINFO_PATH, O_RDONLY);
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if (file == -1) {
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fprintf(stderr, "Error: failed to open %s: %s\n", CPUINFO_PATH, strerror(errno));
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exit(EXIT_FAILURE);
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}
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/* Only used for error reporting */
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size_t position = 0;
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char* data_start = buffer;
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ssize_t bytes_read;
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do {
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bytes_read = read(file, buffer, BUFFER_SIZE);
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if (bytes_read < 0) {
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fprintf(stderr, "Error: failed to read file %s at position %zu: %s\n",
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CPUINFO_PATH, position, strerror(errno));
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exit(EXIT_FAILURE);
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}
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position += (size_t) bytes_read;
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if (bytes_read > 0) {
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fwrite(buffer, 1, (size_t) bytes_read, stdout);
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}
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} while (bytes_read != 0);
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if (close(file) != 0) {
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fprintf(stderr, "Error: failed to close %s: %s\n", CPUINFO_PATH, strerror(errno));
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exit(EXIT_FAILURE);
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}
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return EXIT_SUCCESS;
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}
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