a0e2fdedd1
clean up most layering violations: sys/boot/i386/common/rbx.h: RBX_* defines OPT_SET() OPT_CHECK() sys/boot/common/util.[ch]: memcpy() memset() memcmp() bcpy() bzero() bcmp() strcmp() strncmp() [new] strcpy() strcat() strchr() strlen() printf() sys/boot/i386/common/cons.[ch]: ioctrl putc() xputc() putchar() getc() xgetc() keyhit() [now takes number of seconds as an argument] getstr() sys/boot/i386/common/drv.[ch]: struct dsk drvread() drvwrite() [new] drvsize() [new] sys/boot/common/crc32.[ch] [new] sys/boot/common/gpt.[ch] [new] - Teach gptboot and gptzfsboot about new files. I haven't touched the rest, but there is still a lot of code duplication to be removed. - Implement full GPT support. Currently we just read primary header and partition table and don't care about checksums, etc. After this change we verify checksums of primary header and primary partition table and if there is a problem we fall back to backup header and backup partition table. - Clean up most messages to use prefix of boot program, so in case of an error we know where the error comes from, eg.: gptboot: unable to read primary GPT header - If we can't boot, print boot prompt only once and not every five seconds. - Honour newly added GPT attributes: bootme - this is bootable partition bootonce - try to boot from this partition only once bootfailed - we failed to boot from this partition - Change boot order of gptboot to the following: 1. Try to boot from all the partitions that have both 'bootme' and 'bootonce' attributes one by one. 2. Try to boot from all the partitions that have only 'bootme' attribute one by one. 3. If there are no partitions with 'bootme' attribute, boot from the first UFS partition. - The 'bootonce' functionality is implemented in the following way: 1. Walk through all the partitions and when 'bootonce' attribute is found without 'bootme' attribute, remove 'bootonce' attribute and set 'bootfailed' attribute. 'bootonce' attribute alone means that we tried to boot from this partition, but boot failed after leaving gptboot and machine was restarted. 2. Find partition with both 'bootme' and 'bootonce' attributes. 3. Remove 'bootme' attribute. 4. Try to execute /boot/loader or /boot/kernel/kernel from that partition. If succeeded we stop here. 5. If execution failed, remove 'bootonce' and set 'bootfailed'. 6. Go to 2. If whole boot succeeded there is new /etc/rc.d/gptboot script coming that will log all partitions that we failed to boot from (the ones with 'bootfailed' attribute) and will remove this attribute. It will also find partition with 'bootonce' attribute - this is the partition we booted from successfully. The script will log success and remove the attribute. All the GPT updates we do here goes to both primary and backup GPT if they are valid. We don't touch headers or partition tables when checksum doesn't match. Reviewed by: arch (Message-ID: <20100917234542.GE1902@garage.freebsd.pl>) Obtained from: Wheel Systems Sp. z o.o. http://www.wheelsystems.com MFC after: 2 weeks
62 lines
2.0 KiB
C
62 lines
2.0 KiB
C
/*-
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* Copyright (c) 1998 Robert Nordier
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms are freely
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* permitted provided that the above copyright notice and this
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* paragraph and the following disclaimer are duplicated in all
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* such forms.
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*
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* This software is provided "AS IS" and without any express or
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* implied warranties, including, without limitation, the implied
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* warranties of merchantability and fitness for a particular
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* purpose.
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*
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* $FreeBSD$
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*/
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#ifndef _RBX_H_
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#define _RBX_H_
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#define RBX_ASKNAME 0x0 /* -a */
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#define RBX_SINGLE 0x1 /* -s */
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/* 0x2 is reserved for log2(RB_NOSYNC). */
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/* 0x3 is reserved for log2(RB_HALT). */
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/* 0x4 is reserved for log2(RB_INITNAME). */
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#define RBX_DFLTROOT 0x5 /* -r */
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#define RBX_KDB 0x6 /* -d */
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/* 0x7 is reserved for log2(RB_RDONLY). */
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/* 0x8 is reserved for log2(RB_DUMP). */
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/* 0x9 is reserved for log2(RB_MINIROOT). */
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#define RBX_CONFIG 0xa /* -c */
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#define RBX_VERBOSE 0xb /* -v */
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#define RBX_SERIAL 0xc /* -h */
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#define RBX_CDROM 0xd /* -C */
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/* 0xe is reserved for log2(RB_POWEROFF). */
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#define RBX_GDB 0xf /* -g */
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#define RBX_MUTE 0x10 /* -m */
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/* 0x11 is reserved for log2(RB_SELFTEST). */
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/* 0x12 is reserved for boot programs. */
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/* 0x13 is reserved for boot programs. */
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#define RBX_PAUSE 0x14 /* -p */
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#define RBX_QUIET 0x15 /* -q */
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#define RBX_NOINTR 0x1c /* -n */
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/* 0x1d is reserved for log2(RB_MULTIPLE) and is just misnamed here. */
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#define RBX_DUAL 0x1d /* -D */
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/* 0x1f is reserved for log2(RB_BOOTINFO). */
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/* pass: -a, -s, -r, -d, -c, -v, -h, -C, -g, -m, -p, -D */
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#define RBX_MASK (OPT_SET(RBX_ASKNAME) | OPT_SET(RBX_SINGLE) | \
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OPT_SET(RBX_DFLTROOT) | OPT_SET(RBX_KDB ) | \
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OPT_SET(RBX_CONFIG) | OPT_SET(RBX_VERBOSE) | \
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OPT_SET(RBX_SERIAL) | OPT_SET(RBX_CDROM) | \
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OPT_SET(RBX_GDB ) | OPT_SET(RBX_MUTE) | \
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OPT_SET(RBX_PAUSE) | OPT_SET(RBX_DUAL))
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#define OPT_SET(opt) (1 << (opt))
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#define OPT_CHECK(opt) ((opts) & OPT_SET(opt))
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extern uint32_t opts;
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#endif /* !_RBX_H_ */
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