minix/servers/iso9660fs/protect.c
David van Moolenbroek 80bd109cd3 libsys: various updates
- move system calls for use by services from libminlib into libsys;
- move srv_fork(2) and srv_kill(2) from RS and into libsys;
- replace getprocnr(2) with sef_self(3);
- rename previous getnprocnr(2) to getprocnr(2);
- clean up getepinfo(2);
- change all libsys calls that used _syscall to use _taskcall, so as
  to avoid going through errno to pass errors; this is already how
  most calls work anyway, and many of the calls previously using
  _syscall were already assumed to return the actual error;
- initialize request messages to zero, for future compatibility
  (note that this does not include PCI calls, which are in need of a
  much bigger overhaul, nor kernel calls);
- clean up more of dead DS code as a side effect.

Change-Id: I8788f54c68598fcf58e23486e270c2d749780ebb
2014-03-01 09:05:00 +01:00

32 lines
956 B
C

#include "inc.h"
#include <unistd.h>
#include <minix/callnr.h>
#include "buf.h"
#include <minix/vfsif.h>
/* This calling is used to access a particular file. */
/*===========================================================================*
* fs_access *
*===========================================================================*/
int fs_access()
{
struct dir_record *rip;
int r = OK;
/* Temporarily open the file whose access is to be checked. */
caller_uid = fs_m_in.REQ_UID;
caller_gid = fs_m_in.REQ_GID;
/* Temporarily open the file. */
if ( (rip = get_dir_record(fs_m_in.REQ_INODE_NR)) == NULL) {
printf("ISOFS(%d) get_dir_record by fs_access() failed\n", sef_self());
return(EINVAL);
}
/* For now ISO9660 doesn't have permission control (read and execution to
* everybody by default. So the access is always granted. */
release_dir_record(rip); /* Release the dir record used */
return(r);
}