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cd_defs(3) Library Functions Manual cd_defs(3) NAME cd_defs - Sets or gets default values for the User or Group ID, or for file or directory permissions LIBRARY Rock Ridge and X/Open Extensions to the CDFS library (libcdrom.so, libcdrom.a) SYNOPSIS #include <sys/cdrom.h> int cd_defs ( char *path, int cmd, struct cd_defs *defs ); PARAMETERS Points to a mount-point of a CD-ROM File System. 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 per- missions for the mounted CD-ROM pointed to by *path. The vari- ables {CD_SETDEFS} and {CD_GETDEFS} are defined in cdfs/xcdr.h, an include file that is called into sys/cdrom.h. 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 di- rectories 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 indi- cate the error. ERRORS The function will fail if: Search permission is denied for a directory in *path or read permission is denied on the mount-point. The address of *defs or *path is invalid. A signal was caught during execution of the function. The argument *path does not point to a mount-point of a CDROM File System. The value of cmd or values of members of the cd_defs structure are in- valid. {OPEN_MAX} file descriptors are currently open in the calling process. [DIGITAL] Either the OPEN_MAX value or the per-process soft de- scriptor limit is checked. The length of the *path string ex- ceeds {PATH_MAX}, or a pathname component is longer than {NAME_MAX} while {_POSIX_NO_TRUNC} is in effect. The system file table is full. A component of *path does not exist, or the *path argument points to an empty string. A component of the *path prefix is not a directory. The user does not have the ap- propriate privileges to set values. RELATED INFORMATION Files: cdfs/xcdr.h, sys/cdrom.h. delim off cd_defs(3)