diff options
Diffstat (limited to 'wiretap/wtap.c')
| -rw-r--r-- | wiretap/wtap.c | 51 |
1 files changed, 48 insertions, 3 deletions
diff --git a/wiretap/wtap.c b/wiretap/wtap.c index 8876b9c060..727c77d286 100644 --- a/wiretap/wtap.c +++ b/wiretap/wtap.c @@ -27,14 +27,41 @@ #include <string.h> #include <errno.h> +#ifdef HAVE_SYS_TYPES_H +#include <sys/types.h> +#endif + +#ifdef HAVE_SYS_STAT_H +#include <sys/stat.h> +#endif + +#ifdef HAVE_UNISTD_H +#include <unistd.h> +#endif + +#ifdef HAVE_IO_H +#include <io.h> +#endif + #include "wtap-int.h" #include "file_wrappers.h" #include "buffer.h" -int -wtap_fd(wtap *wth) +/* + * Return the size of the file, as reported by the OS. + * (gint64, in case that's 64 bits.) + */ +gint64 +wtap_file_size(wtap *wth, int *err) { - return wth->fd; + struct stat statb; + + if (fstat(wth->fd, &statb) == -1) { + if (err != NULL) + *err = errno; + return -1; + } + return statb.st_size; } int @@ -465,6 +492,24 @@ wtap_read(wtap *wth, int *err, gchar **err_info, long *data_offset) return TRUE; /* success */ } +/* + * Return an approximation of the amount of data we've read sequentially + * from the file so far. (gint64, in case that's 64 bits.) + */ +gint64 +wtap_read_so_far(wtap *wth, int *err) +{ + off_t file_pos; + + file_pos = lseek(wth->fd, 0, SEEK_CUR); + if (file_pos == -1) { + if (err != NULL) + *err = errno; + return -1; + } + return file_pos; +} + struct wtap_pkthdr* wtap_phdr(wtap *wth) { |