/* Must be loaded before the following headers. */
#include "ldpreload.h"
+/* Disable assert()s if not compiled with --enable-debug. */
+#ifndef DEBUG
+# define NDEBUG
+#endif
+
+#include <assert.h>
#include <errno.h>
#include <fcntl.h>
#include <stdarg.h>
#ifdef HAVE_ERROR_H
# include <error.h>
#endif
+#ifdef HAVE_STRUCT__IO_FILE__FILENO
+# include <libio.h>
+#endif
/* Conflicting declaration in glibc. */
#undef fwrite_unlocked
* additional call. */
static int isatty_noinline(int fd) noinline;
static int isatty_noinline(int fd) {
+ assert(fd >= 0);
+
int saved_errno = errno;
int result = isatty(fd);
errno = saved_errno;
debug("%3d -> %3d\t\t\t[%d]\n", oldfd, newfd, getpid());
#endif
+ assert(oldfd >= 0 && newfd >= 0);
+
if (unlikely(!initialized)) {
init_from_environment();
}
debug("%3d -> .\t\t\t[%d]\n", fd, getpid());
#endif
+ assert(fd >= 0);
+
if (unlikely(!initialized)) {
init_from_environment();
}
int, c, FILE *, stream)
HOOK_FILE1(int, putchar_unlocked, stdout,
int, c)
+/* glibc defines (_IO_)putc_unlocked() to __overflow() in some cases. */
+#ifdef HAVE_STRUCT__IO_FILE__FILENO
+HOOK_FD2(int, __overflow, f->_fileno, _IO_FILE *, f, int, ch)
+#endif
/* perror(3) */
HOOK_VOID1(void, perror, STDERR_FILENO,
int close(int fd) {
DLSYM_FUNCTION(real_close, "close");
- close_fd(fd);
+ if (fd >= 0) {
+ close_fd(fd);
+ }
return real_close(fd);
}
static int (*real_fclose)(FILE *);
int fclose(FILE *fp) {
+ int fd;
+
DLSYM_FUNCTION(real_fclose, "fclose");
- close_fd(fileno(fp));
+ if (fp != NULL && (fd = fileno(fp)) >= 0) {
+ close_fd(fd);
+ }
return real_fclose(fp);
}