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authorDavid Oberhollenzer <david.oberhollenzer@sigma-star.at>2021-06-24 16:04:57 +0200
committerDavid Oberhollenzer <david.oberhollenzer@sigma-star.at>2021-06-25 15:12:41 +0200
commitb409ddcec8c7ae304a7985e450b723fbb95cf4e9 (patch)
treef5709ed75336cb8fd4ee553c5a0f30425829d12b /extras/browse.c
parente567e9c5df1b0b9781d9e2a625c22302005cd95e (diff)
libfstree: guard against possible overflow in readlink()
*in theory*, say on a 32 bit system, we could have a 32 bit size_t and a 64 bit off_t. If the filesystem permitted this, we *could* then have a symlink with a target > 4G. Or the target is exacetely 4G, but adding a null-terminator could exceed addressable memory. This commit adds a check to guard against such an overflow and throw an error, instead of silently wrapping around. Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
Diffstat (limited to 'extras/browse.c')
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