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| author | Andrey Belov <defan@nginx.com> | 2012-02-13 16:29:04 +0000 |
|---|---|---|
| committer | Andrey Belov <defan@nginx.com> | 2012-02-13 16:29:04 +0000 |
| commit | bd1e719bf9c4bc58076e7b52e87be645c9b803f5 (patch) | |
| tree | f1c94ff9e91e2d2594ba9d1ae7f92120cca36722 /src/http/ngx_http_script.c | |
| parent | 32c8df44d5f53026d92ec24bcf4c864359395e55 (diff) | |
| download | nginx-bd1e719bf9c4bc58076e7b52e87be645c9b803f5.tar.gz nginx-bd1e719bf9c4bc58076e7b52e87be645c9b803f5.zip | |
Added disable_symlinks directive.
To completely disable symlinks (disable_symlinks on)
we use openat(O_NOFOLLOW) for each path component
to avoid races.
To allow symlinks with the same owner (disable_symlinks if_not_owner),
use openat() (followed by fstat()) and fstatat(AT_SYMLINK_NOFOLLOW),
and then compare uids between fstat() and fstatat().
As there is a race between openat() and fstatat() we don't
know if openat() in fact opened symlink or not. Therefore,
we have to compare uids even if fstatat() reports the opened
component isn't a symlink (as we don't know whether it was
symlink during openat() or not).
Default value is off, i.e. symlinks are allowed.
Diffstat (limited to 'src/http/ngx_http_script.c')
0 files changed, 0 insertions, 0 deletions