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path: root/coreutils/truncate.c
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2016-11-23Convert all coreutils/* applets to "new style" applet definitionsDenys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2016-01-13truncate: use O_WRONLY|O_NONBLOCKMike Frysinger
This matches coreutils behavior. We don't read the fd, and truncation does not need blocking. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2016-01-13truncate: always set mode when opening file to avoid fortify errorsAri Sundholm
Busybox crashes due to no mode being given when opening: $ ./busybox truncate -s 1M foo *** invalid open64 call: O_CREAT without mode ***: ./busybox terminated ======= Backtrace: ========= /lib/x86_64-linux-gnu/libc.so.6(+0x7338f)[0x7f66d921338f] /lib/x86_64-linux-gnu/libc.so.6(__fortify_fail+0x5c)[0x7f66d92aac9c] /lib/x86_64-linux-gnu/libc.so.6(+0xeb6aa)[0x7f66d928b6aa] ./busybox[0x4899f9] ======= Memory map: ======== 00400000-004d0000 r-xp 00000000 00:1a 137559 /home/ari/busybox/busybox 006cf000-006d0000 r--p 000cf000 00:1a 137559 /home/ari/busybox/busybox 006d0000-006d1000 rw-p 000d0000 00:1a 137559 /home/ari/busybox/busybox 006d1000-006d4000 rw-p 00000000 00:00 0 014e7000-01508000 rw-p 00000000 00:00 0 [heap] 7f66d8f8a000-7f66d8fa0000 r-xp 00000000 08:07 1579008 /lib/x86_64-linux-gnu/libgcc_s.so.1 7f66d8fa0000-7f66d919f000 ---p 00016000 08:07 1579008 /lib/x86_64-linux-gnu/libgcc_s.so.1 7f66d919f000-7f66d91a0000 rw-p 00015000 08:07 1579008 /lib/x86_64-linux-gnu/libgcc_s.so.1 7f66d91a0000-7f66d935b000 r-xp 00000000 08:07 1578994 /lib/x86_64-linux-gnu/libc-2.19.so 7f66d935b000-7f66d955a000 ---p 001bb000 08:07 1578994 /lib/x86_64-linux-gnu/libc-2.19.so 7f66d955a000-7f66d955e000 r--p 001ba000 08:07 1578994 /lib/x86_64-linux-gnu/libc-2.19.so 7f66d955e000-7f66d9560000 rw-p 001be000 08:07 1578994 /lib/x86_64-linux-gnu/libc-2.19.so 7f66d9560000-7f66d9565000 rw-p 00000000 00:00 0 7f66d9565000-7f66d966a000 r-xp 00000000 08:07 1579020 /lib/x86_64-linux-gnu/libm-2.19.so 7f66d966a000-7f66d9869000 ---p 00105000 08:07 1579020 /lib/x86_64-linux-gnu/libm-2.19.so 7f66d9869000-7f66d986a000 r--p 00104000 08:07 1579020 /lib/x86_64-linux-gnu/libm-2.19.so 7f66d986a000-7f66d986b000 rw-p 00105000 08:07 1579020 /lib/x86_64-linux-gnu/libm-2.19.so 7f66d986b000-7f66d988e000 r-xp 00000000 08:07 1578981 /lib/x86_64-linux-gnu/ld-2.19.so 7f66d9a64000-7f66d9a67000 rw-p 00000000 00:00 0 7f66d9a8a000-7f66d9a8d000 rw-p 00000000 00:00 0 7f66d9a8d000-7f66d9a8e000 r--p 00022000 08:07 1578981 /lib/x86_64-linux-gnu/ld-2.19.so 7f66d9a8e000-7f66d9a8f000 rw-p 00023000 08:07 1578981 /lib/x86_64-linux-gnu/ld-2.19.so 7f66d9a8f000-7f66d9a90000 rw-p 00000000 00:00 0 7ffc47761000-7ffc47782000 rw-p 00000000 00:00 0 [stack] 7ffc477ab000-7ffc477ad000 r-xp 00000000 00:00 0 [vdso] ffffffffff600000-ffffffffff601000 r-xp 00000000 00:00 0 [vsyscall] Aborted (core dumped) $ Fix this by simply always setting the mode, as it doesn't hurt even when O_CREAT is not specified. This bug is a regression introduced in fc3e40e, as xopen(), which was originally used, would automatically set the mode. Signed-off-by: Ari Sundholm <ari@tuxera.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2015-05-25truncate: do not die when a file doesn't exist and no-create flag is onAri Sundholm
Additionally, open(2) failures do not make the program die immediately. This makes the behavior of the program match coreutils more closely. function old new delta truncate_main 161 221 +60 Signed-off-by: Ari Sundholm <ari@tuxera.com> Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2015-03-22truncate: new appletDenys Vlasenko
Add the actual new source file :( Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>