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authorDavid Marchand <david.marchand@6wind.com>2014-07-03 12:24:55 +0200
committerDenys Vlasenko <vda.linux@googlemail.com>2014-07-04 16:39:28 +0200
commit7d16964c3ebb9e7beee89ad96f824470f7ab5346 (patch)
tree28d1e30f6f6b5f932d90223d6a4e7c53a994a26f /scripts/randomtest
parent03e17bfa8d71c0feca01c94a820ce2f3736a35b8 (diff)
downloadbusybox-7d16964c3ebb9e7beee89ad96f824470f7ab5346.tar.gz
modinfo: fix module parsing with kernel >= 2.6.37
display() function returns the length of the value we are displaying + 1. As a consequence, if we have field=value\0field=value\0field=value in the binary, then the second occurence will be skipped as ptr will miss the first character of the following field. Example trying to list aliases from ixgbe.ko on a 3.2 kernel. - In the module we have: alias=pci:v00008086d00001560sv*sd*bc*sc*i*\0 alias=pci:v00008086d0000154Asv*sd*bc*sc*i*\0 alias=pci:v00008086d00001557sv*sd*bc*sc*i*\0 alias=pci:v00008086d0000154Fsv*sd*bc*sc*i*\0 alias=pci:v00008086d0000154Dsv*sd*bc*sc*i*\0 ... - Using modinfo -F alias ixgbe returns: alias: pci:v00008086d00001560sv*sd*bc*sc*i* alias: pci:v00008086d00001557sv*sd*bc*sc*i* alias: pci:v00008086d0000154Dsv*sd*bc*sc*i* ... This problem appeared with kernel commit "modules: no need to align .modinfo strings" b6472776816af1ed52848c93d26e3edb3b17adab in 2.6.37. Fix this by not trusting display() return value but increment ptr by strlen(ptr) (the same way as depmod.c does). Signed-off-by: David Marchand <david.marchand@6wind.com> Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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