diff options
| author | Denys Vlasenko <vda.linux@googlemail.com> | 2014-09-22 21:14:02 +0200 |
|---|---|---|
| committer | Denys Vlasenko <vda.linux@googlemail.com> | 2014-09-22 21:14:02 +0200 |
| commit | d6e7672545c717497490c0b0f54f64594f374f9d (patch) | |
| tree | 736aa8a2f9264221709b45361939475c8ae83c24 /libbb/xfuncs.c | |
| parent | 15943c886d6e1929b90db9bc6077c849cbaa187e (diff) | |
| download | busybox-d6e7672545c717497490c0b0f54f64594f374f9d.tar.gz | |
less: move "retry-on-EAGAIN" logic closer to read ops
This makes "G" (goto end of input) command work as well as
/search_for_nonexistent_string: both will read to EOF now
even from somewhat slow input (such as kernel's "git log").
function old new delta
ndelay_on 35 43 +8
ndelay_off 35 43 +8
read_lines 695 691 -4
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 2/1 up/down: 16/-4) Total: 12 bytes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Diffstat (limited to 'libbb/xfuncs.c')
| -rw-r--r-- | libbb/xfuncs.c | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/libbb/xfuncs.c b/libbb/xfuncs.c index 23f27516f..f25ce9446 100644 --- a/libbb/xfuncs.c +++ b/libbb/xfuncs.c @@ -25,20 +25,22 @@ #include "libbb.h" /* Turn on nonblocking I/O on a fd */ -void FAST_FUNC ndelay_on(int fd) +int FAST_FUNC ndelay_on(int fd) { int flags = fcntl(fd, F_GETFL); if (flags & O_NONBLOCK) - return; + return flags; fcntl(fd, F_SETFL, flags | O_NONBLOCK); + return flags; } -void FAST_FUNC ndelay_off(int fd) +int FAST_FUNC ndelay_off(int fd) { int flags = fcntl(fd, F_GETFL); if (!(flags & O_NONBLOCK)) - return; + return flags; fcntl(fd, F_SETFL, flags & ~O_NONBLOCK); + return flags; } void FAST_FUNC close_on_exec_on(int fd) |