d/freebsd-nq
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When a Linux program tries to access a /path the kernel tries

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/compat/linux/path before /path.  Stop following symbolic links when
looking up /compat/linux/path so dead symbolic links aren't ignored.
This allows syscalls like readlink(2) and lstat(2) to work on such links.
And open(2) will return an error now instead of trying /path.
This commit is contained in:
Tijl Coosemans 2017-10-15 18:53:21 +00:00
parent 29431e54b9
commit 11ce4d9f39
1 changed files with 2 additions and 2 deletions
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4
sys/kern/vfs_lookup.c
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@ -1390,13 +1390,13 @@ kern_alternate_path(struct thread *td, const char *prefix, const char *path,
for (cp = &ptr[len] - 1; *cp != '/'; cp--);
*cp = '\0';
NDINIT(&nd, LOOKUP, FOLLOW, UIO_SYSSPACE, buf, td);
NDINIT(&nd, LOOKUP, NOFOLLOW, UIO_SYSSPACE, buf, td);
error = namei(&nd);
*cp = '/';
if (error != 0)
goto keeporig;
} else {
NDINIT(&nd, LOOKUP, FOLLOW, UIO_SYSSPACE, buf, td);
NDINIT(&nd, LOOKUP, NOFOLLOW, UIO_SYSSPACE, buf, td);
error = namei(&nd);
if (error != 0)