| getmntopts.3 (1559) | getmntopts.3 (4065) |
|---|---|
| 1.\" Copyright (c) 1994 2.\" The Regents of the University of California. All rights reserved. 3.\" 4.\" Redistribution and use in source and binary forms, with or without 5.\" modification, are permitted provided that the following conditions 6.\" are met: 7.\" 1. Redistributions of source code must retain the above copyright 8.\" notice, this list of conditions and the following disclaimer. --- 26 unchanged lines hidden (view full) --- 35.Dt GETMNTOPTS 3 36.Os BSD 4.4 37.Sh NAME 38.Nm getmntopts 39.Nd scan mount options 40.Sh SYNOPSIS 41.Fd #include <mntopts.h> 42.Ft void | 1.\" Copyright (c) 1994 2.\" The Regents of the University of California. All rights reserved. 3.\" 4.\" Redistribution and use in source and binary forms, with or without 5.\" modification, are permitted provided that the following conditions 6.\" are met: 7.\" 1. Redistributions of source code must retain the above copyright 8.\" notice, this list of conditions and the following disclaimer. --- 26 unchanged lines hidden (view full) --- 35.Dt GETMNTOPTS 3 36.Os BSD 4.4 37.Sh NAME 38.Nm getmntopts 39.Nd scan mount options 40.Sh SYNOPSIS 41.Fd #include <mntopts.h> 42.Ft void |
| 43.Fn getmntopts "char *options" "struct mntopt *mopts" "int *flagp" | 43.Fn getmntopts "char *options" "struct mntopt *mopts" "int *flagp" "int *altflagp" |
| 44.Sh DESCRIPTION 45The 46.Nm getmntopts 47function takes a comma separated option list and a list 48of valid option names, and computes the bitmask 49corresponding to the requested set of options. 50.Pp 51The string 52.Dv options 53is broken down into a sequence of comma separated tokens. 54Each token is looked up in the table described by 55.Dv mopts 56and the bits in | 44.Sh DESCRIPTION 45The 46.Nm getmntopts 47function takes a comma separated option list and a list 48of valid option names, and computes the bitmask 49corresponding to the requested set of options. 50.Pp 51The string 52.Dv options 53is broken down into a sequence of comma separated tokens. 54Each token is looked up in the table described by 55.Dv mopts 56and the bits in |
| 57the word referenced by | 57the word referenced by either |
| 58.Dv flagp | 58.Dv flagp |
| 59or 60.Dv altflagp 61(depending on the 62.Dv m_altloc 63field of the option's table entry) |
|
| 59are updated. 60The flag word is not initialized by 61.Nm getmntopt . 62The table, 63.Dv mopts , 64has the following format: 65.Bd -literal 66struct mntopt { 67 char *m_option; /* option name */ 68 int m_inverse; /* is this a negative option, eg "dev" */ 69 int m_flag; /* bit to set, eg MNT_RDONLY */ | 64are updated. 65The flag word is not initialized by 66.Nm getmntopt . 67The table, 68.Dv mopts , 69has the following format: 70.Bd -literal 71struct mntopt { 72 char *m_option; /* option name */ 73 int m_inverse; /* is this a negative option, eg "dev" */ 74 int m_flag; /* bit to set, eg MNT_RDONLY */ |
| 75 int m_altloc; /* non-zero to use altflagp rather than flagp */ |
|
| 70}; 71.Ed 72.Pp 73The members of this structure are: 74.Bl -tag -width m_inverse 75.It Fa m_option 76the option name, 77for example --- 17 unchanged lines hidden (view full) --- 95the flag word when the option is recognized. 96The bit is set when the option is discovered, 97but cleared if the option name was preceded 98by the letters 99.Dq no . 100The 101.Dv m_inverse 102flag causes these two operations to be reversed. | 76}; 77.Ed 78.Pp 79The members of this structure are: 80.Bl -tag -width m_inverse 81.It Fa m_option 82the option name, 83for example --- 17 unchanged lines hidden (view full) --- 101the flag word when the option is recognized. 102The bit is set when the option is discovered, 103but cleared if the option name was preceded 104by the letters 105.Dq no . 106The 107.Dv m_inverse 108flag causes these two operations to be reversed. |
| 109.It Fa m_altloc 110the bit should be set or cleared in 111.Dv altflagp 112rather than 113.Dv flagp . |
|
| 103.El 104.Pp 105Each of the user visible 106.Dv MNT_ 107flags has a corresponding 108.Dv MOPT_ 109macro which defines an appropriate 110.Li "struct mntopt" --- 53 unchanged lines hidden --- | 114.El 115.Pp 116Each of the user visible 117.Dv MNT_ 118flags has a corresponding 119.Dv MOPT_ 120macro which defines an appropriate 121.Li "struct mntopt" --- 53 unchanged lines hidden --- |