88 lines
2.0 KiB
C
88 lines
2.0 KiB
C
#include "util.h"
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#include <execinfo.h>
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#include <unistd.h>
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#include <stdlib.h>
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#include <string.h>
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#define BT_BUF_SIZE 100
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char *path_append(const char *path, const char *filename)
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{
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int needs_separator = 0;
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if ((path[strnlen(path, MAX_PATH_LEN)-1] != '/') && (filename[0] != '/')) {
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needs_separator = 1;
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}
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char *str;
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size_t ul = strnlen(path, MAX_PATH_LEN);
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size_t sl = strnlen(filename, MAX_FILENAME_LEN);
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str = calloc(ul + sl + needs_separator + 1, sizeof(char));
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if (!str) {
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fprintf(stderr, "path_append(): calloc failure!\n");
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exit_failure();
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}
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strncpy(str, path, ul);
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if (needs_separator) {
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str[ul] = '/';
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}
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strncat(str, filename, sl);
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return str;
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}
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int64_t round_div(int64_t a, int64_t b)
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{
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return (a + (b / 2)) / b;
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}
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void PTHREAD_MUTEX_UNLOCK(pthread_mutex_t *x)
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{
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int i;
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i = pthread_mutex_unlock(x);
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if (i) {
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fprintf(stderr, "thread %lu: pthread_mutex_unlock() failed, %d, %s\n",
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pthread_self(), i, strerror(i));
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exit_failure();
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}
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}
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void PTHREAD_MUTEX_LOCK(pthread_mutex_t *x)
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{
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int i;
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i = pthread_mutex_lock(x);
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if (i) {
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fprintf(stderr, "thread %lu: pthread_mutex_lock() failed, %d, %s\n",
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pthread_self(), i, strerror(i));
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exit_failure();
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}
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}
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void exit_failure(void)
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{
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int nptrs;
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void *buffer[BT_BUF_SIZE];
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nptrs = backtrace(buffer, BT_BUF_SIZE);
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fprintf(stderr, "\nOops! HTTPDirFS crashed! :(\n");
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fprintf(stderr, "backtrace() returned the following %d addresses:\n",
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nptrs);
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backtrace_symbols_fd(buffer, nptrs, STDERR_FILENO);
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exit(EXIT_FAILURE);
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}
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void erase_string(FILE *file, size_t max_len, char *s)
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{
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size_t l = strnlen(s, max_len);
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for (size_t k = 0; k < l; k++) {
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fprintf(file, "\b");
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}
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for (size_t k = 0; k < l; k++) {
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fprintf(file, " ");
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}
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for (size_t k = 0; k < l; k++) {
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fprintf(file, "\b");
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}
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}
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