getmntent(3C)                  NFS                  getmntent(3C)



NAME
     getmntent, setmntent, addmntent, endmntent, hasmntopt - get
     file system descriptor file entry

SYNOPSIS
     #include <stdio.h>
     #include <mntent.h>

     FILE *setmntent(filep, type)
     char *filep;
     char *type;

     struct mntent *getmntent(filep)

     FILE *filep;
     int addmntent(filep, mnt)
     FILE *filep;
     struct mntent *mnt;

     char *hasmntopt(mnt, opt)
     struct mntent *mnt;
     char *opt;

     int endmntent(filep)
     FILE *filep;

DESCRIPTION
     These routines replace the getfsent() routines for accessing
     the file system description file /etc/fstab.  They are also
     used to access the mounted file system description file
     /etc/mtab.

     setmntent() opens a file system description file and returns
     a file pointer which can then be used with getmntent,
     addmntent, or endmntent.  The type argument is the same as
     in fopen(3S).  getmntent() reads the next line from filep
     and returns a pointer to an object with the following struc-
     ture containing the broken-out fields of a line in the
     filesystem description file, <mntent.h>.  The fields have
     meanings described in fstab(4).

          struct mntent {
                 char  *mnt_fsname;  /* file system name */
                 char  *mnt_dir;     /* file system path prefix */
                 char  *mnt_type;    /* 4.2, nfs, swap, or xx */
                 char  *mnt_opts;    /* ro, quota, etc. */
                 int   mnt_freq;     /* dump frequency, in days */
                 int   mnt_passno;   /* pass number on parallel fsck */
          };

     addmntent() adds the mntent structure mnt to the end of the
     open file filep.  Note: filep has to be opened for writing



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getmntent(3C)                  NFS                  getmntent(3C)



     if this is to work.

     hasmntopt() scans the mnt_opts field of the mntent structure
     mnt for a substring that matches opt.  It returns the
     address of the substring if a match is found, 0 otherwise.

     endmntent() closes the file.

FILES
     /etc/fstab
     /etc/mtab

SEE ALSO
     getfsent(3C), fstab(4), mtab(4)

DIAGNOSTICS
     NULL pointer (0) returned on EOF or error.

BUGS
     The returned mntent structure points to static information
     that is overwritten in each call.


































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