diff options
Diffstat (limited to 'sbin/tunefs/tunefs.c')
| -rw-r--r-- | sbin/tunefs/tunefs.c | 59 |
1 files changed, 51 insertions, 8 deletions
diff --git a/sbin/tunefs/tunefs.c b/sbin/tunefs/tunefs.c index 583dbff..d5868eb 100644 --- a/sbin/tunefs/tunefs.c +++ b/sbin/tunefs/tunefs.c @@ -38,7 +38,7 @@ static char copyright[] = #endif /* not lint */ #ifndef lint -static char sccsid[] = "@(#)tunefs.c 8.2 (Berkeley) 4/19/94"; +static char sccsid[] = "@(#)tunefs.c 8.3 (Berkeley) 5/3/95"; #endif /* not lint */ /* @@ -47,6 +47,7 @@ static char sccsid[] = "@(#)tunefs.c 8.2 (Berkeley) 4/19/94"; #include <sys/param.h> #include <sys/stat.h> +#include <ufs/ufs/dinode.h> #include <ufs/ffs/fs.h> #include <errno.h> @@ -83,7 +84,7 @@ main(argc, argv) char *cp, *special, *name; struct stat st; int i; - int Aflag = 0; + int Aflag = 0, Nflag = 0; struct fstab *fs; char *chg[2], device[MAXPATHLEN]; @@ -109,6 +110,8 @@ again: (st.st_mode & S_IFMT) != S_IFCHR) errx(10, "%s: not a block or character device", special); getsb(&sblock, special); + chg[FS_OPTSPACE] = "space"; + chg[FS_OPTTIME] = "time"; for (; argc > 0 && argv[0][0] == '-'; argc--, argv++) { for (cp = &argv[0][1]; *cp; cp++) switch (*cp) { @@ -117,6 +120,10 @@ again: Aflag++; continue; + case 'N': + Nflag++; + continue; + case 'a': name = "maximum contiguous block count"; if (argc < 1) @@ -182,8 +189,6 @@ again: if (argc < 1) errx(10, "-o: missing %s", name); argc--, argv++; - chg[FS_OPTSPACE] = "space"; - chg[FS_OPTTIME] = "time"; if (strcmp(*argv, chg[FS_OPTSPACE]) == 0) i = FS_OPTSPACE; else if (strcmp(*argv, chg[FS_OPTTIME]) == 0) @@ -207,12 +212,48 @@ again: warnx(OPTWARN, "space", "<", MINFREE); continue; + case 't': + name = "track skew in sectors"; + if (argc < 1) + errx(10, "-t: missing %s", name); + argc--, argv++; + i = atoi(*argv); + if (i < 0) + errx(10, "%s: %s must be >= 0", + *argv, name); + warnx("%s changes from %d to %d", + name, sblock.fs_trackskew, i); + sblock.fs_trackskew = i; + continue; + default: usage(); } } if (argc != 1) usage(); + if (Nflag) { + fprintf(stdout, "tunefs: current settings\n"); + fprintf(stdout, "\tmaximum contiguous block count %d\n", + sblock.fs_maxcontig); + fprintf(stdout, + "\trotational delay between contiguous blocks %dms\n", + sblock.fs_rotdelay); + fprintf(stdout, + "\tmaximum blocks per file in a cylinder group %d\n", + sblock.fs_maxbpg); + fprintf(stdout, "\tminimum percentage of free space %d%%\n", + sblock.fs_minfree); + fprintf(stdout, "\toptimization preference: %s\n", + chg[sblock.fs_optim]); + fprintf(stdout, "\ttrack skew %d sectors\n", + sblock.fs_trackskew); + fprintf(stdout, "tunefs: no changes made\n"); + exit(0); + } + fi = open(special, 1); + if (fi < 0) + err(3, "cannot open %s for writing", special); bwrite((daddr_t)SBOFF / dev_bsize, (char *)&sblock, SBSIZE); if (Aflag) for (i = 0; i < sblock.fs_ncg; i++) @@ -226,13 +267,14 @@ void usage() { - fprintf(stderr, "Usage: tunefs tuneup-options special-device\n"); + fprintf(stderr, "Usage: tunefs [-AN] tuneup-options special-device\n"); fprintf(stderr, "where tuneup-options are:\n"); - fprintf(stderr, "\t-a maximum contiguous blocks\n"); fprintf(stderr, "\t-d rotational delay between contiguous blocks\n"); + fprintf(stderr, "\t-a maximum contiguous blocks\n"); fprintf(stderr, "\t-e maximum blocks per file in a cylinder group\n"); fprintf(stderr, "\t-m minimum percentage of free space\n"); fprintf(stderr, "\t-o optimization preference (`space' or `time')\n"); + fprintf(stderr, "\t-t track skew in sectors\n"); exit(2); } @@ -242,14 +284,15 @@ getsb(fs, file) char *file; { - fi = open(file, 2); + fi = open(file, 0); if (fi < 0) - err(3, "cannot open %s", file); + err(3, "cannot open %s for reading", file); if (bread((daddr_t)SBOFF, (char *)fs, SBSIZE)) err(4, "%s: bad super block", file); if (fs->fs_magic != FS_MAGIC) err(5, "%s: bad magic number", file); dev_bsize = fs->fs_fsize / fsbtodb(fs, 1); + close(fi); } void |
