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| author | pjd <pjd@FreeBSD.org> | 2006-10-31 21:21:48 +0000 |
|---|---|---|
| committer | pjd <pjd@FreeBSD.org> | 2006-10-31 21:21:48 +0000 |
| commit | 51fb042070317c283395fd7170157adbbc879898 (patch) | |
| tree | acdaac6c56590c6a8eda8da3cf77f486f7819343 /lib/libufs/cgread.3 | |
| parent | 4ed49f81f813686d8a7faf0c75dc006bb0632cf8 (diff) | |
| download | FreeBSD-src-51fb042070317c283395fd7170157adbbc879898.zip FreeBSD-src-51fb042070317c283395fd7170157adbbc879898.tar.gz | |
Implement cgwrite1(3) function which stored a given cylinder group on disk.
Sponsored by: home.pl
Diffstat (limited to 'lib/libufs/cgread.3')
| -rw-r--r-- | lib/libufs/cgread.3 | 23 |
1 files changed, 21 insertions, 2 deletions
diff --git a/lib/libufs/cgread.3 b/lib/libufs/cgread.3 index f98da40..38edf17 100644 --- a/lib/libufs/cgread.3 +++ b/lib/libufs/cgread.3 @@ -4,6 +4,7 @@ .\" Manual page for libufs functions: .\" cgread(3) .\" cgread1(3) +.\" cgwrite1(3) .\" .\" This file is in the public domain. .\" @@ -13,8 +14,8 @@ .Dt CGREAD 3 .Os .Sh NAME -.Nm cgread , cgread1 -.Nd read cylinder groups of UFS disks +.Nm cgread , cgread1, cgwrite1 +.Nd read/write cylinder groups of UFS disks .Sh LIBRARY .Lb libufs .Sh SYNOPSIS @@ -28,6 +29,8 @@ .Fn cgread "struct uufsd *disk" .Ft int .Fn cgread1 "struct uufsd *disk" "int c" +.Ft int +.Fn cgwrite1 "struct uufsd *disk" "int c" .Sh DESCRIPTION The .Fn cgread @@ -60,6 +63,14 @@ with a cylinder group specifier equivalent to the value of the current field, and then incrementing the .Va d_ccg field. +.Pp +The +.Fn cgwrite1 +function stores cylinder group specified by +.Fa c +from +.Va d_cg +field of a userland UFS disk structure on disk. .Sh RETURN VALUES Both functions return 0 if there are no more cylinder groups to read, 1 if there are more cylinder groups, and \-1 on error. @@ -75,8 +86,16 @@ The function .Fn cgread1 has semantically identical failure conditions to those of .Fn cgread . +.Pp +The function +.Fn cgwrite1 +may fail and set +.Va errno +for any of the errors specified for the library function +.Xr bwrite 3 . .Sh SEE ALSO .Xr bread 3 , +.Xr bwrite 3 , .Xr libufs 3 .Sh HISTORY These functions first appeared as part of |
