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https://github.com/freebsd/freebsd-src
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Somewhere around the 473rd time I mistyped "mdconfig file" instead of
"mdconfig -f file", I decided that it would be easier to make mdconfig DWIM than to teach my fingers to type the correct command line. MFC after: 3 weeks
This commit is contained in:
parent
85ee63c923
commit
6c49c6cff2
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=221232
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@ -68,6 +68,8 @@
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.Op Fl n
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.Op Fl v
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.Op Fl u Ar unit
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.Nm
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.Ar file
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.Sh DESCRIPTION
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The
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.Nm
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@ -185,6 +187,15 @@ Request a specific unit number for the
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.Xr md 4
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device instead of automatic allocation.
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.El
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.Pp
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The last form,
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.Nm
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.Ar file ,
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is provided for convenience as an abbreviation of
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.Nm
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.Fl a
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.Fl t Ar vnode
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.Fl f Ar file .
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.Sh EXAMPLES
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To create a 4 megabyte
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.Xr malloc 9
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@ -38,6 +38,7 @@ static enum {UNSET, ATTACH, DETACH, LIST} action = UNSET;
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static int nflag;
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static void usage(void);
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static void md_set_file(const char *);
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static int md_find(char *, const char *);
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static int md_query(char *name);
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static int md_list(char *units, int opt);
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@ -59,7 +60,8 @@ usage(void)
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" [-s size] [-S sectorsize] [-u unit]\n"
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" [-x sectors/track] [-y heads/cylinder]\n"
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" mdconfig -d -u unit [-o [no]force]\n"
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" mdconfig -l [-v] [-n] [-u unit]\n");
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" mdconfig -l [-v] [-n] [-u unit]\n"
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" mdconfig file\n");
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fprintf(stderr, "\t\ttype = {malloc, preload, vnode, swap}\n");
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fprintf(stderr, "\t\toption = {cluster, compress, reserve}\n");
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fprintf(stderr, "\t\tsize = %%d (512 byte blocks), %%db (B),\n");
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@ -82,10 +84,7 @@ main(int argc, char **argv)
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err(1, "could not allocate memory");
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vflag = 0;
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bzero(mdio.md_file, PATH_MAX);
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for (;;) {
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ch = getopt(argc, argv, "ab:df:lno:s:S:t:u:vx:y:");
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if (ch == -1)
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break;
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while ((ch = getopt(argc, argv, "ab:df:lno:s:S:t:u:vx:y:")) != -1) {
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switch (ch) {
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case 'a':
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if (cmdline != 0)
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@ -143,21 +142,7 @@ main(int argc, char **argv)
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}
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if (cmdline != 2)
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usage();
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if (realpath(optarg, mdio.md_file) == NULL) {
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err(1, "could not find full path for %s",
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optarg);
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}
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fd = open(mdio.md_file, O_RDONLY);
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if (fd < 0)
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err(1, "could not open %s", optarg);
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else if (mdio.md_mediasize == 0) {
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struct stat sb;
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if (fstat(fd, &sb) == -1)
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err(1, "could not stat %s", optarg);
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mdio.md_mediasize = sb.st_size;
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}
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close(fd);
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md_set_file(optarg);
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break;
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case 'o':
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if (action == DETACH) {
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usage();
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}
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}
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argc -= optind;
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argv += optind;
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if (action == UNSET) {
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if (argc != 1)
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usage();
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action = ATTACH;
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mdio.md_type = MD_VNODE;
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mdio.md_options = MD_CLUSTER | MD_AUTOUNIT | MD_COMPRESS;
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cmdline = 2;
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md_set_file(*argv);
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}
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mdio.md_version = MDIOVERSION;
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if (!kld_isloaded("g_md") && kld_load("geom_md") == -1)
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return (0);
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}
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static void
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md_set_file(const char *fn)
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{
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struct stat sb;
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int fd;
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if (realpath(fn, mdio.md_file) == NULL)
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err(1, "could not find full path for %s", fn);
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fd = open(mdio.md_file, O_RDONLY);
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if (fd < 0)
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err(1, "could not open %s", fn);
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if (fstat(fd, &sb) == -1)
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err(1, "could not stat %s", fn);
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if (!S_ISREG(sb.st_mode))
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errx(1, "%s is not a regular file", fn);
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if (mdio.md_mediasize == 0)
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mdio.md_mediasize = sb.st_size;
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close(fd);
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}
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/*
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* Lists md(4) disks. Is used also as a query routine, since it handles XML
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* interface. 'units' can be NULL for listing memory disks. It might be
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