From 84dba9c5bbd99cb80c0e201bbffa27a51766c63f Mon Sep 17 00:00:00 2001 From: Denys Vlasenko Date: Mon, 10 Jan 2011 12:51:44 +0100 Subject: [PATCH] tftp: fix bad interaction betweel poll() and alarm(). Closes bug 3061 This was breaking timeout handling. function old new delta tftp_progress_update - 45 +45 tftp_progress_done - 32 +32 tftp_protocol 1839 1858 +19 tftp_progress_init 9 15 +6 tftp_main 298 286 -12 ------------------------------------------------------------------------------ (add/remove: 2/0 grow/shrink: 2/1 up/down: 102/-12) Total: 90 bytes Signed-off-by: Denys Vlasenko --- libbb/progress.c | 2 +- networking/tftp.c | 39 ++++++++++++--------------------------- 2 files changed, 13 insertions(+), 28 deletions(-) diff --git a/libbb/progress.c b/libbb/progress.c index 4c2763c53..74e80a39e 100644 --- a/libbb/progress.c +++ b/libbb/progress.c @@ -78,7 +78,7 @@ void FAST_FUNC bb_progress_update(bb_progress_t *p, /* Do not update on every call * (we can be called on every network read!) */ if (since_last_update == 0 && !totalsize) - return; + return; beg_and_transferred = beg_range + transferred; ratio = 100; diff --git a/networking/tftp.c b/networking/tftp.c index 04c8f0ebb..fcd933f6a 100644 --- a/networking/tftp.c +++ b/networking/tftp.c @@ -105,39 +105,22 @@ struct BUG_G_too_big { #define error_pkt_str (error_pkt + 4) #if ENABLE_FEATURE_TFTP_PROGRESS_BAR -/* SIGALRM logic nicked from the wget applet */ -static void progress_meter(int flag) +static void tftp_progress_update(void) { - /* We can be called from signal handler */ - int save_errno = errno; - - if (flag == -1) { /* first call to progress_meter */ - bb_progress_init(&G.pmt); - } - bb_progress_update(&G.pmt, G.file, 0, G.pos, G.size); - - if (flag == 0) { - /* last call to progress_meter */ - alarm(0); - bb_putchar_stderr('\n'); - } else { - if (flag == -1) { /* first call to progress_meter */ - signal_SA_RESTART_empty_mask(SIGALRM, progress_meter); - } - alarm(1); - } - - errno = save_errno; } static void tftp_progress_init(void) { - progress_meter(-1); + bb_progress_init(&G.pmt); + tftp_progress_update(); } static void tftp_progress_done(void) { - if (G.pmt.inited) - progress_meter(0); + if (G.pmt.inited) { + tftp_progress_update(); + bb_putchar_stderr('\n'); + G.pmt.inited = 0; + } } #else # define tftp_progress_init() ((void)0) @@ -460,9 +443,10 @@ static int tftp_protocol( xsendto(socket_fd, xbuf, send_len, &peer_lsa->u.sa, peer_lsa->len); #if ENABLE_FEATURE_TFTP_PROGRESS_BAR - if (ENABLE_TFTP && remote_file) { /* tftp */ + if (ENABLE_TFTP && remote_file) /* tftp */ G.pos = (block_nr - 1) * (uoff_t)blksize; - } + if (G.pmt.inited) + tftp_progress_update(); #endif /* Was it final ACK? then exit */ if (finished && (opcode == TFTP_ACK)) @@ -479,6 +463,7 @@ static int tftp_protocol( case 0: retries--; if (retries == 0) { + tftp_progress_done(); bb_error_msg("timeout"); goto ret; /* no err packet sent */ } -- 2.25.1