>Synopsis: file timestamps wrap around
>Category: <PR category (one line)>
>Environment:
System : OpenBSD 6.0
Details : OpenBSD 6.0 (GENERIC) #1917: Tue Jul 26 12:48:33 MDT 2016
[email protected]:/usr/src/sys/arch/i386/compile/GENERIC
Architecture: OpenBSD.i386
Machine : i386
>Description:
Use of 'touch', the kernel's file system, and the 'ls' program produces
unintended time stamps. Time stamps that were meant to be in the past
come out as time stamps in the future, and vice versa.
>How-To-Repeat:
$ export TZ=UTC0
$ touch -t 190101010000 in
$ ls -l in
-rw-r--r-- 1 bruno bruno 0 Feb 6 2037 in
$ ls -lT in
-rw-r--r-- 1 bruno bruno 0 Feb 6 06:28:16 2037 in
$ touch -t 203801190314.08 in2
$ ls -l in2
-rw-r--r-- 1 bruno bruno 0 Dec 13 1901 in2
$ ls -lT in2
-rw-r--r-- 1 bruno bruno 0 Dec 13 20:45:52 1901 in2
$ touch -t 210602070628.15 in3
$ ls -l in3
-rw-r--r-- 1 bruno bruno 0 Dec 31 1969 in3
$ ls -lT in3
-rw-r--r-- 1 bruno bruno 0 Dec 31 23:59:59 in3
Credit for these instructions goes to Paul Eggert.
https://lists.gnu.org/archive/html/bug-gzip/2017-11/msg00020.html
>Fix:
The 'touch' program should properly validate its input, and reject
time stamps that it or the kernel's file system cannot handle.
See https://cwe.mitre.org/data/definitions/20.html
dmesg:
OpenBSD 6.0 (GENERIC) #1917: Tue Jul 26 12:48:33 MDT 2016
[email protected]:/usr/src/sys/arch/i386/compile/GENERIC
cpu0: Intel(R) Core(TM) m3-6Y30 CPU @ 0.90GHz ("GenuineIntel" 686-class) 1.52
GHz
cpu0:
FPU,V86,DE,PSE,TSC,MSR,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,MMX,FXSR,SSE,SSE2,SSE3,PCLMUL,MWAIT,SSSE3,CX16,SSE4.1,SSE4.2,MOVBE,POPCNT,AES,XSAVE,AVX,RDRAND,LAHF,ABM,3DNOWP,ITSC,RDSEED,CLFLUSHOPT
real mem = 1073168384 (1023MB)
avail mem = 1039958016 (991MB)
mpath0 at root
scsibus0 at mpath0: 256 targets
mainbus0 at root
bios0 at mainbus0: date 06/23/99, BIOS32 rev. 0 @ 0xfda00, SMBIOS rev. 2.5 @
0xe1000 (10 entries)
bios0: vendor innotek GmbH version "VirtualBox" date 12/01/2006
bios0: innotek GmbH VirtualBox
acpi0 at bios0: rev 2
acpi0: sleep states S0 S5
acpi0: tables DSDT FACP SSDT
acpi0: wakeup devices
acpitimer0 at acpi0: 3579545 Hz, 32 bits
acpiprt0 at acpi0: bus 0 (PCI0)
"PNP0303" at acpi0 not configured
"PNP0F03" at acpi0 not configured
acpibat0 at acpi0: BAT0 model "1" serial 0 type VBOX oem "innotek"
acpiac0 at acpi0: AC unit online
acpivideo0 at acpi0: GFX0
bios0: ROM list: 0xc0000/0x8000 0xe2000/0xd400
cpu0 at mainbus0: (uniprocessor)
mtrr: CPU supports MTRRs but not enabled by BIOS
cpu0: mwait min=64, max=64
pci0 at mainbus0 bus 0: configuration mode 1 (bios)
pchb0 at pci0 dev 0 function 0 "Intel 82441FX" rev 0x02
pcib0 at pci0 dev 1 function 0 "Intel 82371SB ISA" rev 0x00
pciide0 at pci0 dev 1 function 1 "Intel 82371AB IDE" rev 0x01: DMA, channel 0
configured to compatibility, channel 1 configured to compatibility
wd0 at pciide0 channel 0 drive 0: <VBOX HARDDISK>
wd0: 128-sector PIO, LBA, 5120MB, 10485760 sectors
wd0(pciide0:0:0): using PIO mode 4, Ultra-DMA mode 2
atapiscsi0 at pciide0 channel 1 drive 0
scsibus1 at atapiscsi0: 2 targets
cd0 at scsibus1 targ 0 lun 0: <VBOX, CD-ROM, 1.0> ATAPI 5/cdrom removable
cd0(pciide0:1:0): using PIO mode 4, Ultra-DMA mode 2
vga1 at pci0 dev 2 function 0 "InnoTek VirtualBox Graphics Adapter" rev 0x00
wsdisplay0 at vga1 mux 1: console (80x25, vt100 emulation)
wsdisplay0: screen 1-5 added (80x25, vt100 emulation)
em0 at pci0 dev 3 function 0 "Intel 82540EM" rev 0x02: irq 10, address
08:00:27:1a:87:0f
"InnoTek VirtualBox Guest Service" rev 0x00 at pci0 dev 4 function 0 not
configured
auich0 at pci0 dev 5 function 0 "Intel 82801AA AC97" rev 0x01: irq 11, ICH AC97
ac97: codec id 0x83847600 (SigmaTel STAC9700)
audio0 at auich0
ohci0 at pci0 dev 6 function 0 "Apple Intrepid USB" rev 0x00: irq 11, version
1.0
piixpm0 at pci0 dev 7 function 0 "Intel 82371AB Power" rev 0x08: SMBus disabled
isa0 at pcib0
isadma0 at isa0
pckbc0 at isa0 port 0x60/5 irq 1 irq 12
pckbd0 at pckbc0 (kbd slot)
wskbd0 at pckbd0: console keyboard, using wsdisplay0
pms0 at pckbc0 (aux slot)
wsmouse0 at pms0 mux 0
pcppi0 at isa0 port 0x61
spkr0 at pcppi0
npx0 at isa0 port 0xf0/16: reported by CPUID; using exception 16
usb0 at ohci0: USB revision 1.0
uhub0 at usb0 "Apple OHCI root hub" rev 1.00/1.00 addr 1
vscsi0 at root
scsibus2 at vscsi0: 256 targets
softraid0 at root
scsibus3 at softraid0: 256 targets
root on wd0a (c1ea2b9ce0536372.a) swap on wd0b dump on wd0b
usbdevs:
Controller /dev/usb0:
addr 1: full speed, self powered, config 1, OHCI root hub(0x0000),
Apple(0x106b), rev 1.00
port 1 powered
port 2 powered
port 3 powered
port 4 powered
port 5 powered
port 6 powered
port 7 powered
port 8 powered
port 9 powered
port 10 powered
port 11 powered
port 12 powered
