MNTTAB(NF) UNIX System V
Name
mnttab - Mounted file system table
Syntax
#include <mnttab.h>
Description
mnttab resides in directory /etc and contains a table of
devices, mounted by the mount(NADM) command, in the
following structure as defined by <mnttab.h>:
struct mnttab {
char mt_dev[32];
char mt_filsys[32];
short mt_ro_flg;
time_t mt_time;
char mt_fstyp[16];
char mt_mntopts[64];
};
Each entry is 150 bytes in length;
⊕ the first 32 bytes are the null-padded name of the place
where the special file is mounted;
⊕ the next 32 bytes represent the null-padded root name of
the mounted special file;
⊕ the next 6 bytes contain the mounted special file's
read/write permissions and the date on which it was
mounted;
⊕ the following 16 bytes are the null-padded name of file
system type;
⊕ the remaining 64 bytes are the null-padded string of mount
options.
The mount options are only used in the case of an NFS file
system.
The maximum number of entries in mnttab is based on the
system parameter
NMOUNT located in /etc/master.d/kernel, which defines the
number of allowable mounted special files.
See Also
mount(NADM), setmnt(ADM)
(printed 8/17/89) MNTTAB(NF)