| Commit message (Collapse) | Author | Age | Files | Lines |
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This will allow us to mutate the image size.
Fixes #3527
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Update seeds to account for the new pseudo-syscall prototype and the new
compressed Base64 syntax. This reduces `syz-imagegen` seed image space
requirements from 127 MB to 43 MB (measured using `du -ch syz_mount_image_*`).
Note that some filesystems are pathological for deflate, e.g. for `f2fs`
seed image space has increased from 320 KB to 2.1 MB. This discrepancy
should not be observed in corpuses after performing various filesystem
operations and image mutations - the previous ad-hoc compression is
highly efficient for near-empty images, but once images are modified deflate
should surpass it.
Tools/versions used are as in google@0d24140 and google@356d821.
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Add the missing boolean argument for changing directory to
`syz_mount_image` calls which are not generated by `syz-imagegen`. Set
it to false to ensure behaviour is as before.
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Represent array[const[X, int8], N] as string["XX...X"].
This replaces potentially huge number of:
NONFAILING(*(uint8_t*)0x2000126c = 0);
NONFAILING(*(uint8_t*)0x2000126d = 0);
NONFAILING(*(uint8_t*)0x2000126e = 0);
with a single memcpy. In one reproducer we had 3991 such lines.
Also replace memcpy's with memset's when possible.
Update #1070
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Currently we only test parsing in tools/syz-runtest
and for test OS in pkg/runtest tests.
This means errors in tests for other OSes won't be
noticed until somebody runs tests manually.
Test parsing of all tests in pkg/runtest tests.
Fix up 2 broken tests.
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Refactor syz_mount_image() to support filesystems not requiring a
backing device and filesystem image (e.g. FUSE). To do that, we check for
the presence of the pointer to the array of struct fs_image_segment: if
missingi, there is no need to setup the loop device and we can proceed
directly with the mount() syscall.
Add syz_mount_image$fuse() (specialization for FUSE) inside
sys/linux/fs_fuse.txt.
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