projects / unix-history / blame
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| 4 | REBOOT(2) UNIX Programmer's Manual REBOOT(2) | |
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| 7 | ||
| 8 | N\bNA\bAM\bME\bE | |
| 9 | reboot - reboot system or halt processor | |
| 10 | ||
| 11 | S\bSY\bYN\bNO\bOP\bPS\bSI\bIS\bS | |
| 12 | #\b#i\bin\bnc\bcl\blu\bud\bde\be <\b<s\bsy\bys\bs/\b/r\bre\beb\bbo\boo\bot\bt.\b.h\bh>\b> | |
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| 14 | r\bre\beb\bbo\boo\bot\bt(\b(h\bho\bow\bwt\bto\bo)\b) | |
| 15 | i\bin\bnt\bt h\bho\bow\bwt\bto\bo;\b; | |
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| 17 | D\bDE\bES\bSC\bCR\bRI\bIP\bPT\bTI\bIO\bON\bN | |
| 18 | _\bR_\be_\bb_\bo_\bo_\bt reboots the system, and is invoked automatically in | |
| 19 | the event of unrecoverable system failures. _\bH_\bo_\bw_\bt_\bo is a mask | |
| 20 | of options passed to the bootstrap program. The system call | |
| 21 | interface permits only RB_HALT or RB_AUTOBOOT to be passed | |
| 22 | to the reboot program; the other flags are used in scripts | |
| 23 | stored on the console storage media, or used in manual | |
| 24 | bootstrap procedures. When none of these options (e.g. | |
| 25 | RB_AUTOBOOT) is given, the system is rebooted from file | |
| 26 | "vmunix" in the root file system of unit 0 of a disk chosen | |
| 27 | in a processor specific way. An automatic consistency check | |
| 28 | of the disks is then normally performed. | |
| 29 | ||
| 30 | The bits of _\bh_\bo_\bw_\bt_\bo are: | |
| 31 | ||
| 32 | RB_HALT | |
| 33 | the processor is simply halted; no reboot takes place. | |
| 34 | RB_HALT should be used with caution. | |
| 35 | ||
| 36 | RB_ASKNAME | |
| 37 | Interpreted by the bootstrap program itself, causing it | |
| 38 | to inquire as to what file should be booted. Normally, | |
| 39 | the system is booted from the file "xx(0,0)vmunix" | |
| 40 | without asking. | |
| 41 | ||
| 42 | RB_SINGLE | |
| 43 | Normally, the reboot procedure involves an automatic | |
| 44 | disk consistency check and then multi-user operations. | |
| 45 | RB_SINGLE prevents the consistency check, rather simply | |
| 46 | booting the system with a single-user shell on the con- | |
| 47 | sole. RB_SINGLE is interpreted by the _\bi_\bn_\bi_\bt(8) program | |
| 48 | in the newly booted system. This switch is not avail- | |
| 49 | able from the system call interface. | |
| 50 | ||
| 51 | Only the super-user may _\br_\be_\bb_\bo_\bo_\bt a machine. | |
| 52 | ||
| 53 | R\bRE\bET\bTU\bUR\bRN\bN V\bVA\bAL\bLU\bUE\bES\bS | |
| 54 | If successful, this call never returns. Otherwise, a -1 is | |
| 55 | returned and an error is returned in the global variable | |
| 56 | _\be_\br_\br_\bn_\bo. | |
| 57 | ||
| 58 | E\bER\bRR\bRO\bOR\bRS\bS | |
| 59 | [EPERM] The caller is not the super-user. | |
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| 63 | Printed 7/9/88 May 9, 1985 1 | |
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| 70 | REBOOT(2) UNIX Programmer's Manual REBOOT(2) | |
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| 74 | S\bSE\bEE\bE A\bAL\bLS\bSO\bO | |
| 75 | crash(8), halt(8), init(8), reboot(8) | |
| 76 | ||
| 77 | B\bBU\bUG\bGS\bS | |
| 78 | The notion of ``console medium'', among other things, is | |
| 79 | specific to the VAX. | |
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| 129 | Printed 7/9/88 May 9, 1985 2 | |
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