0164957abb
RS CHANGES: - Crash recovery is now implemented like live update. Two instances are kept side by side and the dead version is live updated into the new one. The endpoint doesn't change and the failure is not exposed (by default) to other system services. - The new instance can be created reactively (when a crash is detected) or proactively. In the latter case, RS can be instructed to keep a replica of the system service to perform a hot swap when the service fails. The flag SF_USE_REPL is set in that case. - The new flag SF_USE_REPL is supported for services in the boot image and dynamically started services through the RS interface (i.e. -p option in the service utility). - Fixed a free unallocated memory bug for core system services.
101 lines
2.6 KiB
C
101 lines
2.6 KiB
C
#ifndef RS_H
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#define RS_H
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/*
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minix/rs.h
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Interface to the reincarnation server
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*/
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#include <minix/bitmap.h>
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#include <minix/com.h>
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/* RSS definitions. */
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#define RSS_NR_IRQ 16
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#define RSS_NR_IO 16
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/* RSS flags. */
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#define RSS_COPY 0x01 /* keep an in-memory copy of the binary */
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#define RSS_IPC_VALID 0x02 /* rss_ipc and rss_ipclen are valid */
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#define RSS_REUSE 0x04 /* Try to reuse previously copied binary */
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#define RSS_NOBLOCK 0x08 /* unblock caller immediately */
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#define RSS_REPLICA 0x10 /* keep a replica of the service */
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/* Common definitions. */
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#define RS_NR_CONTROL 8
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#define RS_NR_PCI_DEVICE 32
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#define RS_NR_PCI_CLASS 4
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#define RS_MAX_LABEL_LEN 16
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/* Labels are copied over separately. */
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struct rss_label
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{
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char *l_addr;
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size_t l_len;
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};
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/* Arguments needed to start a new driver or server */
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struct rs_start
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{
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unsigned rss_flags;
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char *rss_cmd;
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size_t rss_cmdlen;
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uid_t rss_uid;
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int rss_nice;
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int rss_major;
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int rss_dev_style;
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long rss_period;
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char *rss_script;
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size_t rss_scriptlen;
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int rss_nr_irq;
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int rss_irq[RSS_NR_IRQ];
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int rss_nr_io;
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struct { unsigned base; unsigned len; } rss_io[RSS_NR_IO];
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int rss_nr_pci_id;
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struct { u16_t vid; u16_t did; } rss_pci_id[RS_NR_PCI_DEVICE];
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int rss_nr_pci_class;
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struct { u32_t class; u32_t mask; } rss_pci_class[RS_NR_PCI_CLASS];
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bitchunk_t rss_system[SYS_CALL_MASK_SIZE];
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struct rss_label rss_label;
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char *rss_ipc;
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size_t rss_ipclen;
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bitchunk_t rss_vm[VM_CALL_MASK_SIZE];
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int rss_nr_control;
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struct rss_label rss_control[RS_NR_CONTROL];
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};
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/* ACL information for access to PCI devices */
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struct rs_pci
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{
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char rsp_label[RS_MAX_LABEL_LEN];
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int rsp_endpoint;
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int rsp_nr_device;
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struct { u16_t vid; u16_t did; } rsp_device[RS_NR_PCI_DEVICE];
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int rsp_nr_class;
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struct { u32_t class; u32_t mask; } rsp_class[RS_NR_PCI_CLASS];
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};
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/* Definition of a public entry of the system process table. */
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struct rprocpub {
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short in_use; /* set when the entry is in use */
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unsigned sys_flags; /* sys flags */
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endpoint_t endpoint; /* process endpoint number */
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long period; /* heartbeat period (or zero) */
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int dev_flags; /* device flags */
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dev_t dev_nr; /* major device number */
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int dev_style; /* device style */
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int dev_style2; /* device style for next major dev number */
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char label[RS_MAX_LABEL_LEN]; /* label of this service */
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char proc_name[RS_MAX_LABEL_LEN]; /* process name of this service */
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bitchunk_t vm_call_mask[VM_CALL_MASK_SIZE]; /* vm call mask */
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struct rs_pci pci_acl; /* pci acl */
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};
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_PROTOTYPE( int minix_rs_lookup, (const char *name, endpoint_t *value));
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#endif
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