Index for Section 3

Alphabetical listing for C

Bottom of page

cd_defs(3)
NAME
  cd_defs - sets or gets default values for the User or Group ID, or for file
  or directory permissions

SYNOPSIS
  #include <sys/cdrom.h>

  int cd_defs(
	  char *path,
	  int cmd,
	  struct cd_defs *defs );

LIBRARY
  Rock Ridge and X/Open Extensions to the CDFS library (libcdrom.so,
  libcdrom.a)

PARAMETERS
  *path
      Points to a mount point of a CD-ROM File System.

  cmd Can be set to either {CD_SETDEFS} to set or {CD_GETDEFS} to get the
      default values for the UID, GID, or file or directory permissions for
      the mounted CD-ROM pointed to by *path. The variables {CD_SETDEFS} and
      {CD_GETDEFS} are defined in cdfs/xcdr.h, an include file that is called
      into sys/cdrom.h.

  *defs
      Points to the cd_defs structure that holds the default values for the
      UID, GID, and file or directory permissions for the mounted CD-ROM
      pointed to by *path. The cd_defs structure is defined in cdfs/xcdr.h,
      an include file that is called into sys/cdrom.h.

DESCRIPTION
  The cd_defs() routine sets or gets the default values for UIDs, GIDs, or
  file or directory permissions for a mounted CD-ROM.

RESTRICTIONS
  Setting default values is restricted to users with the appropriate
  privileges.  This function is intended to be used to set default values
  only directly after the CD-ROM is mounted and before its files and
  directories are accessed. Attempting to use this function to set default
  values after files or directories on the CD-ROM have been accessed may
  produce unpredictable results.

RETURN VALUES
  If successful, the value zero is returned. If unsuccessful, the integer -1
  is returned and errno is set to indicate the error.

ERRORS
  The function will fail if:

  [EACCES]
      Search permission is denied for a directory in *path or read permission
      is denied on the mount-point.

  [EFAULT]
      The address of *defs or *path is invalid.

  [EINTR]
      A signal was caught during execution of the function.

  [EINVAL]
      The argument *path does not point to a mount-point of a CD-ROM File
      System. The value of cmd or values of members of the cd_defs structure
      are invalid.

  [EMFILE]
      {OPEN_MAX} file descriptors are currently open in the calling process.

      [Tru64 UNIX]  Either the OPEN_MAX value or the per-process soft
      descriptor limit is checked.

  [ENAMETOOLONG]
      The length of the *path string exceeds {PATH_MAX}, or a pathname
      component is longer than {NAME_MAX} while {_POSIX_NO_TRUNC} is in
      effect.

  [ENFILE]
      The system file table is full.

  [ENOENT]
      A component of *path does not exist, or the *path argument points to an
      empty string.

  [ENOTDIR]
      A component of the *path prefix is not a directory.

  [EPERM]
      The user does not have the appropriate privileges to set values.

SEE ALSO
  Files: cdfs/xcdr.h, sys/cdrom.h

Index for Section 3

Alphabetical listing for C

Top of page