getvfsent(3C)						   Standard C Library Functions 					     getvfsent(3C)

NAME

       getvfsent, getvfsfile, getvfsspec, getvfsany - get vfstab file entry

SYNOPSIS

       #include <stdio.h>
       #include <sys/vfstab.h>

       int getvfsent(FILE *fp, struct vfstab *vp);

       int getvfsfile(FILE *fp, struct vfstab *vp, char *file);

       int getvfsspec(FILE *, struct vfstab *vp, char *spec);

       int getvfsany(FILE *, struct vfstab *vp, struct vfstab *vref);

DESCRIPTION

       The  getvfsent(),  getvfsfile(),  getvfsspec(),	and  getvfsany() functions each fill in the structure pointed to by vp with the broken-out
       fields of a line in the /etc/vfstab file. Each line in the file contains a vfstab structure, declared in the <sys/vfstab.h>  header,  whose
       following members are described on the vfstab(4) manual page:

	      char *vfs_special;
	      char *vfs_fsckdev;
	      char *vfs_mountp;
	      char *vfs_fstype;
	      char *vfs_fsckpass;
	      char *vfs_automnt;
	      char *vfs_mntopts;

       The  getvfsent()  function returns a pointer to the next vfstab structure in the file; so successive calls can be used to search the entire
       file.

       The getvfsfile() function searches the file referenced by fp until a mount point matching file is found and fills vp with the  fields  from
       the line in the file.

       The  getvfsspec()  function  searches  the file referenced by fp until a special device matching spec is found and fills vp with the fields
       from the line in the file.  The spec argument will try to match on device type (block or character special) and major and minor device num-
       bers. If it cannot match in this manner, then it compares the strings.

       The  getvfsany() function searches the file referenced by fp until a match is found between a line in the file and vref. A match occurrs if
       all non-null entries in vref match the corresponding fields in the file.

       Note that these functions do not open, close, or rewind the file.

RETURN VALUES

       If the next entry is successfully read by getvfsent() or a match is found with getvfsfile(), getvfsspec(), or getvfsany(), 0  is  returned.
       If an end-of-file is encountered on reading, these functions return -1. If an error is encountered, a value greater than 0 is returned. The
       possible error values are:

       VFS_TOOLONG    A line in the file exceeded the internal buffer size of VFS_LINE_MAX.

       VFS_TOOMANY    A line in the file contains too many fields.

       VFS_TOOFEW     A line in the file contains too few fields.

FILES

       /etc/vfstab

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |MT-Level		     |Safe			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       vfstab(4), attributes(5)

NOTES

       The members of the vfstab structure point to information contained in a static area, so it must be copied if it is to be saved.

SunOS 5.11							    12 Mar 1997 						     getvfsent(3C)