diff options
Diffstat (limited to 'slirp/tftp.c')
| -rw-r--r-- | slirp/tftp.c | 32 |
1 files changed, 18 insertions, 14 deletions
diff --git a/slirp/tftp.c b/slirp/tftp.c index b78765f3af..520dbd6d3c 100644 --- a/slirp/tftp.c +++ b/slirp/tftp.c @@ -37,6 +37,10 @@ static inline void tftp_session_update(struct tftp_session *spt) static void tftp_session_terminate(struct tftp_session *spt) { + if (spt->fd >= 0) { + close(spt->fd); + spt->fd = -1; + } g_free(spt->filename); spt->slirp = NULL; } @@ -54,7 +58,7 @@ static int tftp_session_allocate(Slirp *slirp, struct tftp_t *tp) /* sessions time out after 5 inactive seconds */ if ((int)(curtime - spt->timestamp) > 5000) { - g_free(spt->filename); + tftp_session_terminate(spt); goto found; } } @@ -64,6 +68,7 @@ static int tftp_session_allocate(Slirp *slirp, struct tftp_t *tp) found: memset(spt, 0, sizeof(*spt)); memcpy(&spt->client_ip, &tp->ip.ip_src, sizeof(spt->client_ip)); + spt->fd = -1; spt->client_port = tp->udp.uh_sport; spt->slirp = slirp; @@ -95,24 +100,23 @@ static int tftp_session_find(Slirp *slirp, struct tftp_t *tp) static int tftp_read_data(struct tftp_session *spt, uint16_t block_nr, uint8_t *buf, int len) { - int fd; - int bytes_read = 0; - - fd = open(spt->filename, O_RDONLY | O_BINARY); + int bytes_read = 0; - if (fd < 0) { - return -1; - } + if (spt->fd < 0) { + spt->fd = open(spt->filename, O_RDONLY | O_BINARY); + } - if (len) { - lseek(fd, block_nr * 512, SEEK_SET); + if (spt->fd < 0) { + return -1; + } - bytes_read = read(fd, buf, len); - } + if (len) { + lseek(spt->fd, block_nr * 512, SEEK_SET); - close(fd); + bytes_read = read(spt->fd, buf, len); + } - return bytes_read; + return bytes_read; } static int tftp_send_oack(struct tftp_session *spt, |