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VFS: check X bit, not R bit, opening executables

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For dynamically linked executables, the interpreter is passed a
file descriptor of the binary being executed.  To this end, VFS
opens the target executable, but opening the file fails if it is
not readable, even when it is executable.  With this patch, when
opening the executable, it verifies the X bit rather than the R
bit on the file, thus allowing the execution of dynamically
linked binaries that are executable but not readable.

Add test86 to verify correctness.

Change-Id: If3514add6a33b33d52c05a0a627d757bff118d77
This commit is contained in:
David van Moolenbroek
2015-08-31 12:55:55 +00:00
parent 9f15e7b366
commit 56ac45c10b
8 changed files with 65 additions and 10 deletions
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@@ -6307,6 +6307,7 @@
./usr/tests/minix-posix/test83 minix-sys
./usr/tests/minix-posix/test84 minix-sys
./usr/tests/minix-posix/test85 minix-sys
./usr/tests/minix-posix/test86 minix-sys
./usr/tests/minix-posix/test9 minix-sys
./usr/tests/minix-posix/testinterp minix-sys
./usr/tests/minix-posix/testisofs minix-sys