#include "readahead-common.h"
-
-int main(int argc, char *argv[])
-{
- char line[1024];
- char path[PATH_MAX];
- FILE *pack;
+int main_analyze(const char *pack_path) {
+ char line[LINE_MAX];
+ _cleanup_fclose_ FILE *pack = NULL;
int a;
int missing = 0;
- off_t size;
- long tsize = 0;
- uint64_t inode;
- uint32_t b;
- uint32_t c;
- struct stat st;
- int pagesize = getpagesize();
-
- if (argc != 2)
- snprintf(path, PATH_MAX, "/.readahead");
- else
- snprintf(path, PATH_MAX, "%s", argv[1]);
-
- pack = fopen(path, "r");
+ size_t tsize = 0;
+
+ if (!pack_path)
+ pack_path = "/.readahead";
+
+ pack = fopen(pack_path, "re");
if (!pack) {
- fprintf(stderr, "Pack file missing\n");
- exit(EXIT_FAILURE);
+ log_error("Pack file missing.");
+ goto fail;
}
- if (!(fgets(line, sizeof(line), pack))) {
- fprintf(stderr, "Pack file corrupt\n");
- exit(EXIT_FAILURE);
+ if (!fgets(line, sizeof(line), pack)) {
+ log_error("Pack file corrupt.");
+ goto fail;
}
- if (!strstr(line, READAHEAD_PACK_FILE_VERSION)) {
- fprintf(stderr, "Pack file version incompatible with this parser\n");
- exit(EXIT_FAILURE);
+ char_array_0(line);
+
+ if (!endswith(line, READAHEAD_PACK_FILE_VERSION)) {
+ log_error("Pack file version incompatible with this parser.");
+ goto fail;
}
if ((a = getc(pack)) == EOF) {
- fprintf(stderr, "Pack file corrupt\n");
- exit(EXIT_FAILURE);
+ log_error("Pack file corrupt.");
+ goto fail;
}
- fprintf(stdout, " pct sections size: path\n");
- fprintf(stdout, " === ======== ====: ====\n");
+ fputs(" pct sections size: path\n"
+ " === ======== ====: ====\n", stdout);
- while(true) {
+ for (;;) {
+ char path[PATH_MAX];
+ struct stat st;
+ uint64_t inode;
int pages = 0;
int sections = 0;
path[strlen(path)-1] = 0;
if (fread(&inode, sizeof(inode), 1, pack) != 1) {
- fprintf(stderr, "Pack file corrupt\n");
- exit(EXIT_FAILURE);
+ log_error("Pack file corrupt.");
+ goto fail;
}
- while (true) {
+ for (;;) {
+ uint32_t b, c;
+
if (fread(&b, sizeof(b), 1, pack) != 1 ||
fread(&c, sizeof(c), 1, pack) != 1) {
- fprintf(stderr, "Pack file corrupt\n");
- exit(EXIT_FAILURE);
+ log_error("Pack file corrupt.");
+ goto fail;
}
if ((b == 0) && (c == 0))
break;
/* Uncomment this to get all the chunks separately
- fprintf(stdout, " %d: %d %d\n", sections, b, c);
+ printf(" %d: %d %d\n", sections, b, c);
*/
pages += (c - b);
}
if (stat(path, &st) == 0) {
+ off_t size;
+
if (sections == 0)
size = st.st_size;
else
- size = pages * pagesize;
+ size = pages * page_size();
tsize += size;
- fprintf(stdout, " %4d%% (%2d) %12ld: %s\n",
- sections ? (int)(size / st.st_size * 100.0) : 100,
- sections ? sections : 1,
- (unsigned long)size,
- path);
+ printf(" %4jd%% (%2d) %12jd: %s\n",
+ (intmax_t) (sections && st.st_size ? size * 100 / st.st_size : 100),
+ sections ? sections : 1,
+ (intmax_t) size,
+ path);
} else {
- fprintf(stdout, " %4dp (%2d) %12s: %s (MISSING)\n",
+ printf(" %4dp (%2d) %12s: %s (MISSING)\n",
sections ? pages : -1,
sections ? sections : 1,
"???",
}
- fprintf(stdout, "\nHOST: %s", line);
- fprintf(stdout, "TYPE: %c\n", a);
- fprintf(stdout, "MISSING: %d\n", missing);
- fprintf(stdout, "TOTAL: %ld\n", tsize);
+ printf("\nHOST: %s"
+ "TYPE: %c\n"
+ "MISSING: %d\n"
+ "TOTAL: %zu\n",
+ line,
+ a,
+ missing,
+ tsize);
+
+ return EXIT_SUCCESS;
- exit(EXIT_SUCCESS);
+fail:
+ return EXIT_FAILURE;
}