WIP libdiod: fix readdir problem on 32 bit server#165
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garlick wants to merge 1 commit intochaos:masterfrom
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WIP libdiod: fix readdir problem on 32 bit server#165garlick wants to merge 1 commit intochaos:masterfrom
garlick wants to merge 1 commit intochaos:masterfrom
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Problem: on an arm7l (32-bit) server, an x86_64 (64-bit) linux v9fs client gets stuck in an infinite readdir loop: Treaddir tag 0 fid 1 offset 0 count 1048552 Rreaddir tag 0 count 2842 80000000 00010402 00000000 00b7d065 02000000 00040100 2e800000 00000816 02000000 00002bb7 c5020000 00000403 00676974 80000000 00d02a02 00000000 Treaddir tag 0 fid 1 offset 2147483647 count 1048552 Rreaddir tag 0 count 1281 80000000 00340b02 00000000 00d8b353 41000000 00040600 74616273 65748000 0000006b 6f020000 00000008 185b4200 00000004 0c006163 6c6f6361 6c2d312e Treaddir tag 0 fid 1 offset 2147483647 count 1048552 Rreaddir tag 0 count 1281 80000000 00340b02 00000000 00d8b353 41000000 00040600 74616273 65748000 0000006b 6f020000 00000008 185b4200 00000004 0c006163 6c6f6361 6c2d312e (repeat forever) On the server, long is probably 32 bits while off_t is probably 64. The use of long to hold temporary d_off (off_t) values internally is incorrect and results in truncation of large values. Note that large d_off values may occur as it is not necessarily an offset. See telldir(3). Use u64 instead. Fixes chaos#164
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Problem: on an arm7l (32-bit) server, an x86_64 (64-bit) linux v9fs client gets stuck in an infinite readdir loop:
On the server, long is probably 32 bits while off_t is probably 64. The use of long to hold temporary d_off (off_t) values internally is incorrect and results in truncation of large values.
Note that large d_off values may occur as it is not necessarily an offset. See telldir(3).
Use u64 instead.
Fixes #164
WIP for now pending testing