mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-12 09:58:36 +00:00
Fix typo in last commit.
Rearrange bits in writelabel() a bit for improved readability.
This commit is contained in:
Poul-Henning Kamp
parent
0dbb100b9b
commit
80baf8ced8
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=109878
@ -359,7 +359,6 @@ makelabel(const char *type, const char *name, struct disklabel *lp)
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int
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writelabel(int f, const char *boot, struct disklabel *lp)
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{
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int flag;
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#ifdef __alpha__
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u_long *p, sum;
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int i;
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@ -376,93 +375,96 @@ writelabel(int f, const char *boot, struct disklabel *lp)
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Warning("write to disk label supressed - label was as follows:");
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display(stdout, lp);
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return (0);
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} else {
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setbootflag(lp);
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lp->d_magic = DISKMAGIC;
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lp->d_magic2 = DISKMAGIC;
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lp->d_checksum = 0;
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lp->d_checksum = dkcksum(lp);
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if (rflag) {
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/*
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* First set the kernel disk label,
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* then write a label to the raw disk.
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* If the SDINFO ioctl fails because it is unimplemented,
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* keep going; otherwise, the kernel consistency checks
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* may prevent us from changing the current (in-core)
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* label.
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*/
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if (ioctl(f, DIOCSDINFO, lp) < 0 &&
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errno != ENODEV && errno != ENOTTY) {
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l_perror("ioctl DIOCSDINFO");
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return (1);
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}
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(void)lseek(f, (off_t)0, SEEK_SET);
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#ifdef __alpha__
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/*
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* Generate the bootblock checksum for the SRM console.
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*/
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for (p = (u_long *)boot, i = 0, sum = 0; i < 63; i++)
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sum += p[i];
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p[63] = sum;
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#endif
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#ifdef __sparc64__
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/*
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* Generate a Sun disklabel around the BSD label for
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* PROM compatability.
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*/
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sl = (struct sun_disklabel *)boot;
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memcpy(sl->sl_text, lp->d_packname, sizeof(lp->d_packname));
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sl->sl_rpm = lp->d_rpm;
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sl->sl_pcylinders = lp->d_ncylinders +
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lp->d_acylinders; /* XXX */
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sl->sl_sparespercyl = lp->d_sparespercyl;
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sl->sl_interleave = lp->d_interleave;
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sl->sl_ncylinders = lp->d_ncylinders;
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sl->sl_acylinders = lp->d_acylinders;
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sl->sl_ntracks = lp->d_ntracks;
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sl->sl_nsectors = lp->d_nsectors;
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sl->sl_magic = SUN_DKMAGIC;
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secpercyl = sl->sl_nsectors * sl->sl_ntracks;
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for (i = 0; i < 8; i++) {
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spp = &sl->sl_part[i];
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npp = &lp->d_partitions[i];
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/*
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* SunOS partitions must start on a cylinder
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* boundary. Note this restriction is forced
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* upon FreeBSD/sparc64 labels too, since we
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* want to keep both labels synchronised.
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*/
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spp->sdkp_cyloffset = npp->p_offset / secpercyl;
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spp->sdkp_nsectors = npp->p_size;
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}
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}
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/* Compute the XOR checksum. */
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sp1 = (u_short *)sl;
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sp2 = (u_short *)(sl + 1);
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sl->sl_cksum = cksum = 0;
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while (sp1 < sp2)
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cksum ^= *sp1++;
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sl->sl_cksum = cksum;
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#endif
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if (write(f, boot, lp->d_bbsize) != (int)lp->d_bbsize) {
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warn("write");
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return (1);
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}
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#if NUMBOOT > 0
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/*
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* Output the remainder of the disklabel
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*/
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if (bootbuf && write(f, bootbuf, bootsize) != bootsize) {
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warn("write");
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return(1);
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}
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#endif
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} else if (ioctl(f, DIOCWDINFO, lp) < 0) {
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setbootflag(lp);
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lp->d_magic = DISKMAGIC;
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lp->d_magic2 = DISKMAGIC;
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lp->d_checksum = 0;
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lp->d_checksum = dkcksum(lp);
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if (!rflag) {
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if (ioctl(f, DIOCWDINFO, lp) < 0) {
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l_perror("ioctl DIOCWDINFO");
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return (1);
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}
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return (0);
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}
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/*
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* First set the kernel disk label,
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* then write a label to the raw disk.
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* If the SDINFO ioctl fails because it is unimplemented,
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* keep going; otherwise, the kernel consistency checks
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* may prevent us from changing the current (in-core)
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* label.
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*/
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if (ioctl(f, DIOCSDINFO, lp) < 0 &&
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errno != ENODEV && errno != ENOTTY) {
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l_perror("ioctl DIOCSDINFO");
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return (1);
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}
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(void)lseek(f, (off_t)0, SEEK_SET);
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#ifdef __alpha__
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/*
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* Generate the bootblock checksum for the SRM console.
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*/
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for (p = (u_long *)boot, i = 0, sum = 0; i < 63; i++)
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sum += p[i];
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p[63] = sum;
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#endif
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#ifdef __sparc64__
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/*
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* Generate a Sun disklabel around the BSD label for
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* PROM compatability.
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*/
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sl = (struct sun_disklabel *)boot;
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memcpy(sl->sl_text, lp->d_packname, sizeof(lp->d_packname));
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sl->sl_rpm = lp->d_rpm;
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sl->sl_pcylinders = lp->d_ncylinders +
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lp->d_acylinders; /* XXX */
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sl->sl_sparespercyl = lp->d_sparespercyl;
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sl->sl_interleave = lp->d_interleave;
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sl->sl_ncylinders = lp->d_ncylinders;
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sl->sl_acylinders = lp->d_acylinders;
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sl->sl_ntracks = lp->d_ntracks;
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sl->sl_nsectors = lp->d_nsectors;
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sl->sl_magic = SUN_DKMAGIC;
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secpercyl = sl->sl_nsectors * sl->sl_ntracks;
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for (i = 0; i < 8; i++) {
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spp = &sl->sl_part[i];
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npp = &lp->d_partitions[i];
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/*
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* SunOS partitions must start on a cylinder
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* boundary. Note this restriction is forced
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* upon FreeBSD/sparc64 labels too, since we
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* want to keep both labels synchronised.
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*/
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spp->sdkp_cyloffset = npp->p_offset / secpercyl;
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spp->sdkp_nsectors = npp->p_size;
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}
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/* Compute the XOR checksum. */
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sp1 = (u_short *)sl;
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sp2 = (u_short *)(sl + 1);
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sl->sl_cksum = cksum = 0;
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while (sp1 < sp2)
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cksum ^= *sp1++;
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sl->sl_cksum = cksum;
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#endif
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if (write(f, boot, lp->d_bbsize) != (int)lp->d_bbsize) {
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warn("write");
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return (1);
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}
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#if NUMBOOT > 0
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/*
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* Output the remainder of the disklabel
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*/
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if (bootbuf && write(f, bootbuf, bootsize) != bootsize) {
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warn("write");
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return(1);
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}
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#endif
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return (0);
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}
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@ -1682,7 +1684,7 @@ void
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usage(void)
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{
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#if NUMBOOT > 0
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fprintf(stderr, "%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n",
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fprintf(stderr, "%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n",
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"usage: disklabel [-r] disk",
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"\t\t(to read label)",
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" disklabel -w [-r] [-n] disk type [ packid ]",
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@ -1697,15 +1699,16 @@ usage(void)
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" disklabel -w -B [-n] [ -b boot1 [ -s boot2 ] ] disk type [ packid ]",
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"\t\t(to write label and boot program)",
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" disklabel -R -B [-n] [ -b boot1 [ -s boot2 ] ] disk protofile [ type ]",
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"\t\t(to restore label and boot program)",
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"\t\t(to restore label and boot program)"
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#else
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" disklabel -B [-n] [ -b bootprog ] disk [ type ]",
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"\t\t(to install boot program with existing on-disk label)",
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" disklabel -w -B [-n] [ -b bootprog ] disk type [ packid ]",
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"\t\t(to write label and install boot program)",
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" disklabel -R -B [-n] [ -b bootprog ] disk protofile [ type ]",
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"\t\t(to restore label and install boot program)",
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"\t\t(to restore label and install boot program)"
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#endif
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);
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#else
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fprintf(stderr, "%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n",
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"usage: disklabel [-r] disk", "(to read label)",
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@ -359,7 +359,6 @@ makelabel(const char *type, const char *name, struct disklabel *lp)
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int
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writelabel(int f, const char *boot, struct disklabel *lp)
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{
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int flag;
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#ifdef __alpha__
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u_long *p, sum;
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int i;
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@ -376,93 +375,96 @@ writelabel(int f, const char *boot, struct disklabel *lp)
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Warning("write to disk label supressed - label was as follows:");
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display(stdout, lp);
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return (0);
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} else {
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setbootflag(lp);
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lp->d_magic = DISKMAGIC;
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lp->d_magic2 = DISKMAGIC;
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lp->d_checksum = 0;
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lp->d_checksum = dkcksum(lp);
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if (rflag) {
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/*
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* First set the kernel disk label,
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* then write a label to the raw disk.
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* If the SDINFO ioctl fails because it is unimplemented,
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* keep going; otherwise, the kernel consistency checks
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* may prevent us from changing the current (in-core)
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* label.
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*/
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if (ioctl(f, DIOCSDINFO, lp) < 0 &&
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errno != ENODEV && errno != ENOTTY) {
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l_perror("ioctl DIOCSDINFO");
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return (1);
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}
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(void)lseek(f, (off_t)0, SEEK_SET);
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#ifdef __alpha__
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/*
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* Generate the bootblock checksum for the SRM console.
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*/
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for (p = (u_long *)boot, i = 0, sum = 0; i < 63; i++)
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sum += p[i];
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p[63] = sum;
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#endif
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#ifdef __sparc64__
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/*
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* Generate a Sun disklabel around the BSD label for
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* PROM compatability.
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*/
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sl = (struct sun_disklabel *)boot;
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memcpy(sl->sl_text, lp->d_packname, sizeof(lp->d_packname));
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sl->sl_rpm = lp->d_rpm;
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sl->sl_pcylinders = lp->d_ncylinders +
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lp->d_acylinders; /* XXX */
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sl->sl_sparespercyl = lp->d_sparespercyl;
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sl->sl_interleave = lp->d_interleave;
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sl->sl_ncylinders = lp->d_ncylinders;
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sl->sl_acylinders = lp->d_acylinders;
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sl->sl_ntracks = lp->d_ntracks;
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sl->sl_nsectors = lp->d_nsectors;
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sl->sl_magic = SUN_DKMAGIC;
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secpercyl = sl->sl_nsectors * sl->sl_ntracks;
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for (i = 0; i < 8; i++) {
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spp = &sl->sl_part[i];
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npp = &lp->d_partitions[i];
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/*
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* SunOS partitions must start on a cylinder
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* boundary. Note this restriction is forced
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* upon FreeBSD/sparc64 labels too, since we
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* want to keep both labels synchronised.
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*/
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spp->sdkp_cyloffset = npp->p_offset / secpercyl;
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spp->sdkp_nsectors = npp->p_size;
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}
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}
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/* Compute the XOR checksum. */
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sp1 = (u_short *)sl;
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sp2 = (u_short *)(sl + 1);
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sl->sl_cksum = cksum = 0;
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while (sp1 < sp2)
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cksum ^= *sp1++;
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sl->sl_cksum = cksum;
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#endif
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if (write(f, boot, lp->d_bbsize) != (int)lp->d_bbsize) {
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warn("write");
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return (1);
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}
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#if NUMBOOT > 0
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/*
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* Output the remainder of the disklabel
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*/
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if (bootbuf && write(f, bootbuf, bootsize) != bootsize) {
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warn("write");
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return(1);
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}
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#endif
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} else if (ioctl(f, DIOCWDINFO, lp) < 0) {
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setbootflag(lp);
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lp->d_magic = DISKMAGIC;
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lp->d_magic2 = DISKMAGIC;
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lp->d_checksum = 0;
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lp->d_checksum = dkcksum(lp);
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if (!rflag) {
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if (ioctl(f, DIOCWDINFO, lp) < 0) {
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l_perror("ioctl DIOCWDINFO");
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return (1);
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}
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return (0);
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}
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/*
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* First set the kernel disk label,
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* then write a label to the raw disk.
|
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* If the SDINFO ioctl fails because it is unimplemented,
|
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* keep going; otherwise, the kernel consistency checks
|
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* may prevent us from changing the current (in-core)
|
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* label.
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*/
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if (ioctl(f, DIOCSDINFO, lp) < 0 &&
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errno != ENODEV && errno != ENOTTY) {
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l_perror("ioctl DIOCSDINFO");
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return (1);
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}
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(void)lseek(f, (off_t)0, SEEK_SET);
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#ifdef __alpha__
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/*
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* Generate the bootblock checksum for the SRM console.
|
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*/
|
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for (p = (u_long *)boot, i = 0, sum = 0; i < 63; i++)
|
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sum += p[i];
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p[63] = sum;
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#endif
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#ifdef __sparc64__
|
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/*
|
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* Generate a Sun disklabel around the BSD label for
|
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* PROM compatability.
|
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*/
|
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sl = (struct sun_disklabel *)boot;
|
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memcpy(sl->sl_text, lp->d_packname, sizeof(lp->d_packname));
|
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sl->sl_rpm = lp->d_rpm;
|
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sl->sl_pcylinders = lp->d_ncylinders +
|
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lp->d_acylinders; /* XXX */
|
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sl->sl_sparespercyl = lp->d_sparespercyl;
|
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sl->sl_interleave = lp->d_interleave;
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sl->sl_ncylinders = lp->d_ncylinders;
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sl->sl_acylinders = lp->d_acylinders;
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sl->sl_ntracks = lp->d_ntracks;
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sl->sl_nsectors = lp->d_nsectors;
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sl->sl_magic = SUN_DKMAGIC;
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secpercyl = sl->sl_nsectors * sl->sl_ntracks;
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for (i = 0; i < 8; i++) {
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spp = &sl->sl_part[i];
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npp = &lp->d_partitions[i];
|
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/*
|
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* SunOS partitions must start on a cylinder
|
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* boundary. Note this restriction is forced
|
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* upon FreeBSD/sparc64 labels too, since we
|
||||
* want to keep both labels synchronised.
|
||||
*/
|
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spp->sdkp_cyloffset = npp->p_offset / secpercyl;
|
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spp->sdkp_nsectors = npp->p_size;
|
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}
|
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|
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/* Compute the XOR checksum. */
|
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sp1 = (u_short *)sl;
|
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sp2 = (u_short *)(sl + 1);
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sl->sl_cksum = cksum = 0;
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while (sp1 < sp2)
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cksum ^= *sp1++;
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sl->sl_cksum = cksum;
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#endif
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if (write(f, boot, lp->d_bbsize) != (int)lp->d_bbsize) {
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warn("write");
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return (1);
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}
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#if NUMBOOT > 0
|
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/*
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* Output the remainder of the disklabel
|
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*/
|
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if (bootbuf && write(f, bootbuf, bootsize) != bootsize) {
|
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warn("write");
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return(1);
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}
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#endif
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return (0);
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}
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@ -1682,7 +1684,7 @@ void
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usage(void)
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{
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#if NUMBOOT > 0
|
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fprintf(stderr, "%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n",
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fprintf(stderr, "%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n",
|
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"usage: disklabel [-r] disk",
|
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"\t\t(to read label)",
|
||||
" disklabel -w [-r] [-n] disk type [ packid ]",
|
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@ -1697,15 +1699,16 @@ usage(void)
|
||||
" disklabel -w -B [-n] [ -b boot1 [ -s boot2 ] ] disk type [ packid ]",
|
||||
"\t\t(to write label and boot program)",
|
||||
" disklabel -R -B [-n] [ -b boot1 [ -s boot2 ] ] disk protofile [ type ]",
|
||||
"\t\t(to restore label and boot program)",
|
||||
"\t\t(to restore label and boot program)"
|
||||
#else
|
||||
" disklabel -B [-n] [ -b bootprog ] disk [ type ]",
|
||||
"\t\t(to install boot program with existing on-disk label)",
|
||||
" disklabel -w -B [-n] [ -b bootprog ] disk type [ packid ]",
|
||||
"\t\t(to write label and install boot program)",
|
||||
" disklabel -R -B [-n] [ -b bootprog ] disk protofile [ type ]",
|
||||
"\t\t(to restore label and install boot program)",
|
||||
"\t\t(to restore label and install boot program)"
|
||||
#endif
|
||||
);
|
||||
#else
|
||||
fprintf(stderr, "%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n",
|
||||
"usage: disklabel [-r] disk", "(to read label)",
|
||||
|
||||
Loading…
Reference in New Issue
Block a user