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add -lminixfs with fs support routines

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. move cache size heuristic from mfs there
	  so mfs and ext2 can share it
	. add vfs credentials retrieving function, with
	  backwards compatability from previous struct
	  format, to be used by both ext2 and mfs
	. fix for ext2 - STATICINIT was fed no.
	  of bytes instead of no. of elements, overallocating
	  memory by a megabyte or two for the superblock
This commit is contained in:
Ben Gras
2011-09-08 16:49:54 +00:00
parent ce1a2793f9
commit 4857d5d554
19 changed files with 202 additions and 91 deletions
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29
servers/ext2/path.c
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@@ -36,10 +36,10 @@ FORWARD _PROTOTYPE( int parse_path, (ino_t dir_ino, ino_t root_ino,
*===========================================================================*/
PUBLIC int fs_lookup()
{
cp_grant_id_t grant, grant2;
cp_grant_id_t grant;
int r, r1, flags, symlinks;
unsigned int len;
size_t offset = 0, path_size, cred_size;
size_t offset = 0, path_size;
ino_t dir_ino, root_ino;
struct inode *rip;
@@ -62,21 +62,16 @@ PUBLIC int fs_lookup()
/* Verify this is a null-terminated path. */
if(user_path[len - 1] != '\0') return(EINVAL);
if(flags & PATH_GET_UCRED) { /* Do we have to copy uid/gid credentials? */
grant2 = (cp_grant_id_t) fs_m_in.REQ_GRANT2;
cred_size = (size_t) fs_m_in.REQ_UCRED_SIZE;
if (cred_size > sizeof(credentials)) return(EINVAL); /* Too big. */
r = sys_safecopyfrom(VFS_PROC_NR, grant2, (vir_bytes) 0,
(vir_bytes) &credentials, cred_size, D);
if (r != OK) return(r);
caller_uid = (uid_t) credentials.vu_uid;
caller_gid = (gid_t) credentials.vu_gid;
} else {
memset(&credentials, 0, sizeof(credentials));
caller_uid = fs_m_in.REQ_UID;
caller_gid = fs_m_in.REQ_GID;
memset(&credentials, 0, sizeof(credentials));
if(!(flags & PATH_GET_UCRED)) { /* Do we have to copy uid/gid credentials? */
caller_uid = (uid_t) fs_m_in.REQ_UID;
caller_gid = (gid_t) fs_m_in.REQ_GID;
} else {
if((r=fs_lookup_credentials(&credentials,
&caller_uid, &caller_gid,
(cp_grant_id_t) fs_m_in.REQ_GRANT2,
(size_t) fs_m_in.REQ_UCRED_SIZE)) != OK)
return r;
}
/* Lookup inode */