From: Ben Gras Date: Wed, 20 Mar 2013 17:04:39 +0000 (+0000) Subject: filesystems: return ENOSYS for REQ_PEEK X-Git-Tag: v3.3.0~1010 X-Git-Url: http://zhaoyanbai.com/repos/%22http:/www.isc.org/icons/zlib_tech.html?a=commitdiff_plain;h=refs%2Fchanges%2F14%2F414%2F6;p=minix.git filesystems: return ENOSYS for REQ_PEEK The filesystems already implement REQ_PEEK, but do not fully use the new filesystem cache code yet. (Because it isn't committed yet..) REQ_PEEK should be disabled for them until they do. This indicates to VFS that they are not annotating their cache blocks (in VM) with inode number/offset info, and therefore mmap() shouldn't succeed on any of their files. (Most importantly exec() won't fallback elegantly otherwise.) Change-Id: Ic57ee422864b4bbc031eadba32973270907b02fd --- diff --git a/servers/ext2/table.c b/servers/ext2/table.c index 2ebfcbce2..af77d746b 100644 --- a/servers/ext2/table.c +++ b/servers/ext2/table.c @@ -46,5 +46,11 @@ int (*fs_call_vec[])(void) = { fs_rdlink, /* 30 */ fs_getdents, /* 31 */ fs_statvfs, /* 32 */ +#if 0 fs_readwrite, /* 33 */ + no_sys, +#else + no_sys, + no_sys, +#endif }; diff --git a/servers/iso9660fs/table.c b/servers/iso9660fs/table.c index e6cb5d387..12ac2f79a 100644 --- a/servers/iso9660fs/table.c +++ b/servers/iso9660fs/table.c @@ -41,5 +41,11 @@ int (*fs_call_vec[])(void) = { no_sys, /* 30: not used */ fs_getdents, /* 31 */ fs_statvfs, /* 32 */ - fs_read /* 33 */ +#if 0 + fs_read, /* 33 */ + no_sys, +#else + no_sys, + no_sys, +#endif }; diff --git a/servers/mfs/table.c b/servers/mfs/table.c index d54c91558..8d19c3b8a 100644 --- a/servers/mfs/table.c +++ b/servers/mfs/table.c @@ -44,6 +44,6 @@ int (*fs_call_vec[])(void) = { fs_rdlink, /* 30 */ fs_getdents, /* 31 */ fs_statvfs, /* 32 */ - fs_readwrite, /* 33 */ + no_sys, /* 33 */ /* peek not supported */ };