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query-machine-capabilities: factor out preparing output directory

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Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>
This commit is contained in:
Thomas Lamprecht 2024-11-17 19:12:39 +01:00
parent 390e77d438
commit 35c93dde5b
1 changed files with 14 additions and 7 deletions
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21
query-machine-capabilities/query-machine-capabilities.c
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@ -39,35 +39,42 @@ void query_cpu_capabilities(cpu_caps_t *res) {
res->reduced_phys_bits = (ebx >> 6) & 0x3f; res->reduced_phys_bits = (ebx >> 6) & 0x3f;
} }
int main() { int prepare_output_directory() {
cpu_caps_t caps;
query_cpu_capabilities(&caps);
// Check that the directory exists and create it if it does not. // Check that the directory exists and create it if it does not.
struct stat statbuf; struct stat statbuf;
int ret = stat(OUTPUT_DIR, &statbuf); int ret = stat(OUTPUT_DIR, &statbuf);
if (ret == 0) { if (ret == 0) {
if (!S_ISDIR(statbuf.st_mode)) { if (!S_ISDIR(statbuf.st_mode)) {
eprintf("Path '" OUTPUT_DIR "' already exists but is not a directory.\n"); eprintf("Path '" OUTPUT_DIR "' already exists but is not a directory.\n");
return 1; return 0;
} }
} else if (errno == ENOENT) { } else if (errno == ENOENT) {
if (mkdir(OUTPUT_DIR, 0755) != 0) { if (mkdir(OUTPUT_DIR, 0755) != 0) {
eprintf("Error creating directory '" OUTPUT_DIR "': %s\n", strerror(errno)); eprintf("Error creating directory '" OUTPUT_DIR "': %s\n", strerror(errno));
return 1; return 0;
} }
} else { } else {
eprintf("Error checking path '" OUTPUT_DIR "': %s\n", strerror(errno)); eprintf("Error checking path '" OUTPUT_DIR "': %s\n", strerror(errno));
return 0;
}
return 1;
}
int main() {
if (!prepare_output_directory()) {
return 1; return 1;
} }
cpu_caps_t caps;
query_cpu_capabilities(&caps);
FILE *file = fopen(OUTPUT_PATH, "w"); FILE *file = fopen(OUTPUT_PATH, "w");
if (file == NULL) { if (file == NULL) {
eprintf("Error opening to file '" OUTPUT_PATH "': %s\n", strerror(errno)); eprintf("Error opening to file '" OUTPUT_PATH "': %s\n", strerror(errno));
return 1; return 1;
} }
ret = fprintf(file, int ret = fprintf(file,
"{" "{"
" \"amd-sev\": {" " \"amd-sev\": {"
" \"cbitpos\": %u," " \"cbitpos\": %u,"