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libvirt/tools/virsh.h

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/*
* virsh.h: a shell to exercise the libvirt API
*
* Copyright (C) 2005, 2007-2012 Red Hat, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; If not, see
* <http://www.gnu.org/licenses/>.
*
* Daniel Veillard <veillard@redhat.com>
* Karel Zak <kzak@redhat.com>
* Daniel P. Berrange <berrange@redhat.com>
*/
#ifndef VIRSH_H
# define VIRSH_H
# include <stdio.h>
# include <stdlib.h>
# include <string.h>
# include <stdarg.h>
# include <unistd.h>
# include <sys/stat.h>
# include <inttypes.h>
# include "internal.h"
# include "virterror_internal.h"
# include "threads.h"
# include "virnetdevbandwidth.h"
# define VSH_MAX_XML_FILE (10*1024*1024)
# define VSH_PROMPT_RW "virsh # "
# define VSH_PROMPT_RO "virsh > "
# define VIR_FROM_THIS VIR_FROM_NONE
# define GETTIMEOFDAY(T) gettimeofday(T, NULL)
# define VSH_MATCH(FLAG) (flags & (FLAG))
/**
* The log configuration
*/
# define MSG_BUFFER 4096
# define SIGN_NAME "virsh"
# define DIR_MODE (S_IWUSR | S_IRUSR | S_IXUSR | S_IRGRP | S_IXGRP | S_IROTH | S_IXOTH) /* 0755 */
# define FILE_MODE (S_IWUSR | S_IRUSR | S_IRGRP | S_IROTH) /* 0644 */
# define LOCK_MODE (S_IWUSR | S_IRUSR) /* 0600 */
# define LVL_DEBUG "DEBUG"
# define LVL_INFO "INFO"
# define LVL_NOTICE "NOTICE"
# define LVL_WARNING "WARNING"
# define LVL_ERROR "ERROR"
/**
* vshErrorLevel:
*
* Indicates the level of a log message
*/
typedef enum {
VSH_ERR_DEBUG = 0,
VSH_ERR_INFO,
VSH_ERR_NOTICE,
VSH_ERR_WARNING,
VSH_ERR_ERROR
} vshErrorLevel;
# define VSH_DEBUG_DEFAULT VSH_ERR_ERROR
/*
* virsh command line grammar:
*
* command_line = <command>\n | <command>; <command>; ...
*
* command = <keyword> <option> [--] <data>
*
* option = <bool_option> | <int_option> | <string_option>
* data = <string>
*
* bool_option = --optionname
* int_option = --optionname <number> | --optionname=<number>
* string_option = --optionname <string> | --optionname=<string>
*
* keyword = [a-zA-Z][a-zA-Z-]*
* number = [0-9]+
* string = ('[^']*'|"([^\\"]|\\.)*"|([^ \t\n\\'"]|\\.))+
*
*/
/*
* vshCmdOptType - command option type
*/
typedef enum {
VSH_OT_BOOL, /* optional boolean option */
VSH_OT_STRING, /* optional string option */
VSH_OT_INT, /* optional or mandatory int option */
VSH_OT_DATA, /* string data (as non-option) */
VSH_OT_ARGV, /* remaining arguments */
VSH_OT_ALIAS, /* alternate spelling for a later argument */
} vshCmdOptType;
/*
* Command group types
*/
# define VSH_CMD_GRP_DOM_MANAGEMENT "Domain Management"
# define VSH_CMD_GRP_DOM_MONITORING "Domain Monitoring"
# define VSH_CMD_GRP_STORAGE_POOL "Storage Pool"
# define VSH_CMD_GRP_STORAGE_VOL "Storage Volume"
# define VSH_CMD_GRP_NETWORK "Networking"
# define VSH_CMD_GRP_NODEDEV "Node Device"
# define VSH_CMD_GRP_IFACE "Interface"
# define VSH_CMD_GRP_NWFILTER "Network Filter"
# define VSH_CMD_GRP_SECRET "Secret"
# define VSH_CMD_GRP_SNAPSHOT "Snapshot"
# define VSH_CMD_GRP_HOST_AND_HV "Host and Hypervisor"
# define VSH_CMD_GRP_VIRSH "Virsh itself"
/*
* Command Option Flags
*/
enum {
VSH_OFLAG_NONE = 0, /* without flags */
VSH_OFLAG_REQ = (1 << 0), /* option required */
VSH_OFLAG_EMPTY_OK = (1 << 1), /* empty string option allowed */
VSH_OFLAG_REQ_OPT = (1 << 2), /* --optionname required */
};
/* forward declarations */
typedef struct _vshCmd vshCmd;
typedef struct _vshCmdDef vshCmdDef;
typedef struct _vshCmdGrp vshCmdGrp;
typedef struct _vshCmdInfo vshCmdInfo;
typedef struct _vshCmdOpt vshCmdOpt;
typedef struct _vshCmdOptDef vshCmdOptDef;
typedef struct _vshControl vshControl;
typedef struct _vshCtrlData vshCtrlData;
/*
* vshCmdInfo -- name/value pair for information about command
*
* Commands should have at least the following names:
* "name" - command name
* "desc" - description of command, or empty string
*/
struct _vshCmdInfo {
const char *name; /* name of information, or NULL for list end */
const char *data; /* non-NULL information */
};
/*
* vshCmdOptDef - command option definition
*/
struct _vshCmdOptDef {
const char *name; /* the name of option, or NULL for list end */
vshCmdOptType type; /* option type */
unsigned int flags; /* flags */
const char *help; /* non-NULL help string; or for VSH_OT_ALIAS
* the name of a later public option */
};
/*
* vshCmdOpt - command options
*
* After parsing a command, all arguments to the command have been
* collected into a list of these objects.
*/
struct _vshCmdOpt {
const vshCmdOptDef *def; /* non-NULL pointer to option definition */
char *data; /* allocated data, or NULL for bool option */
vshCmdOpt *next;
};
/*
* Command Usage Flags
*/
enum {
VSH_CMD_FLAG_NOCONNECT = (1 << 0), /* no prior connection needed */
VSH_CMD_FLAG_ALIAS = (1 << 1), /* command is an alias */
};
/*
* vshCmdDef - command definition
*/
struct _vshCmdDef {
const char *name; /* name of command, or NULL for list end */
bool (*handler) (vshControl *, const vshCmd *); /* command handler */
const vshCmdOptDef *opts; /* definition of command options */
const vshCmdInfo *info; /* details about command */
unsigned int flags; /* bitwise OR of VSH_CMD_FLAG */
};
/*
* vshCmd - parsed command
*/
struct _vshCmd {
const vshCmdDef *def; /* command definition */
vshCmdOpt *opts; /* list of command arguments */
vshCmd *next; /* next command */
};
/*
* vshControl
*/
struct _vshControl {
char *name; /* connection name */
virConnectPtr conn; /* connection to hypervisor (MAY BE NULL) */
vshCmd *cmd; /* the current command */
char *cmdstr; /* string with command */
bool imode; /* interactive mode? */
bool quiet; /* quiet mode */
int debug; /* print debug messages? */
bool timing; /* print timing info? */
bool readonly; /* connect readonly (first time only, not
* during explicit connect command)
*/
char *logfile; /* log file name */
int log_fd; /* log file descriptor */
char *historydir; /* readline history directory name */
char *historyfile; /* readline history file name */
bool useGetInfo; /* must use virDomainGetInfo, since
virDomainGetState is not supported */
bool useSnapshotOld; /* cannot use virDomainSnapshotGetParent or
virDomainSnapshotNumChildren */
virThread eventLoop;
virMutex lock;
bool eventLoopStarted;
bool quit;
const char *escapeChar; /* String representation of
console escape character */
};
struct _vshCmdGrp {
const char *name; /* name of group, or NULL for list end */
const char *keyword; /* help keyword */
const vshCmdDef *commands;
};
void vshError(vshControl *ctl, const char *format, ...)
ATTRIBUTE_FMT_PRINTF(2, 3);
void vshOpenLogFile(vshControl *ctl);
void vshOutputLogFile(vshControl *ctl, int log_level, const char *format,
va_list ap)
ATTRIBUTE_FMT_PRINTF(3, 0);
void vshCloseLogFile(vshControl *ctl);
const char *vshCmddefGetInfo(const vshCmdDef *cmd, const char *info);
const vshCmdDef *vshCmddefSearch(const char *cmdname);
bool vshCmddefHelp(vshControl *ctl, const char *name);
const vshCmdGrp *vshCmdGrpSearch(const char *grpname);
bool vshCmdGrpHelp(vshControl *ctl, const char *name);
int vshCommandOpt(const vshCmd *cmd, const char *name, vshCmdOpt **opt)
ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(2) ATTRIBUTE_NONNULL(3)
ATTRIBUTE_RETURN_CHECK;
int vshCommandOptInt(const vshCmd *cmd, const char *name, int *value)
ATTRIBUTE_NONNULL(3) ATTRIBUTE_RETURN_CHECK;
int vshCommandOptUInt(const vshCmd *cmd, const char *name,
unsigned int *value)
ATTRIBUTE_NONNULL(3) ATTRIBUTE_RETURN_CHECK;
int vshCommandOptUL(const vshCmd *cmd, const char *name,
unsigned long *value)
ATTRIBUTE_NONNULL(3) ATTRIBUTE_RETURN_CHECK;
int vshCommandOptString(const vshCmd *cmd, const char *name,
const char **value)
ATTRIBUTE_NONNULL(3) ATTRIBUTE_RETURN_CHECK;
int vshCommandOptLongLong(const vshCmd *cmd, const char *name,
long long *value)
ATTRIBUTE_NONNULL(3) ATTRIBUTE_RETURN_CHECK;
int vshCommandOptULongLong(const vshCmd *cmd, const char *name,
unsigned long long *value)
ATTRIBUTE_NONNULL(3) ATTRIBUTE_RETURN_CHECK;
int vshCommandOptScaledInt(const vshCmd *cmd, const char *name,
unsigned long long *value, int scale,
unsigned long long max)
ATTRIBUTE_NONNULL(3) ATTRIBUTE_RETURN_CHECK;
bool vshCommandOptBool(const vshCmd *cmd, const char *name);
const vshCmdOpt *vshCommandOptArgv(const vshCmd *cmd,
const vshCmdOpt *opt);
bool vshCmdHasOption(vshControl *ctl, const vshCmd *cmd, const char *optname);
/* Filter flags for various vshCommandOpt*By() functions */
typedef enum {
VSH_BYID = (1 << 1),
VSH_BYUUID = (1 << 2),
VSH_BYNAME = (1 << 3),
VSH_BYMAC = (1 << 4),
} vshLookupByFlags;
/* Given an index, return either the name of that device (non-NULL) or
* of its parent (NULL if a root). */
typedef const char * (*vshTreeLookup)(int devid, bool parent, void *opaque);
int vshTreePrint(vshControl *ctl, vshTreeLookup lookup, void *opaque,
int num_devices, int devid);
void vshPrintExtra(vshControl *ctl, const char *format, ...)
ATTRIBUTE_FMT_PRINTF(2, 3);
void vshDebug(vshControl *ctl, int level, const char *format, ...)
ATTRIBUTE_FMT_PRINTF(3, 4);
/* XXX: add batch support */
# define vshPrint(_ctl, ...) vshPrintExtra(NULL, __VA_ARGS__)
/* User visible sort, so we want locale-specific case comparison. */
# define vshStrcasecmp(S1, S2) strcasecmp(S1, S2)
int vshNameSorter(const void *a, const void *b);
int vshDomainState(vshControl *ctl, virDomainPtr dom, int *reason);
virTypedParameterPtr vshFindTypedParamByName(const char *name,
virTypedParameterPtr list,
int count);
char *vshGetTypedParamValue(vshControl *ctl, virTypedParameterPtr item)
ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(2);
char *vshEditWriteToTempFile(vshControl *ctl, const char *doc);
int vshEditFile(vshControl *ctl, const char *filename);
char *vshEditReadBackFile(vshControl *ctl, const char *filename);
int vshAskReedit(vshControl *ctl, const char *msg);
int vshStreamSink(virStreamPtr st, const char *bytes, size_t nbytes,
void *opaque);
double vshPrettyCapacity(unsigned long long val, const char **unit);
int vshStringToArray(char *str, char ***array);
/* Typedefs, function prototypes for job progress reporting.
* There are used by some long lingering commands like
* migrate, dump, save, managedsave.
*/
struct _vshCtrlData {
vshControl *ctl;
const vshCmd *cmd;
int writefd;
};
/* error handling */
extern virErrorPtr last_error;
void vshReportError(vshControl *ctl);
void vshResetLibvirtError(void);
/* allocation wrappers */
void *_vshMalloc(vshControl *ctl, size_t sz, const char *filename, int line);
# define vshMalloc(_ctl, _sz) _vshMalloc(_ctl, _sz, __FILE__, __LINE__)
void *_vshCalloc(vshControl *ctl, size_t nmemb, size_t sz,
const char *filename, int line);
# define vshCalloc(_ctl, _nmemb, _sz) \
_vshCalloc(_ctl, _nmemb, _sz, __FILE__, __LINE__)
char *_vshStrdup(vshControl *ctl, const char *s, const char *filename,
int line);
# define vshStrdup(_ctl, _s) _vshStrdup(_ctl, _s, __FILE__, __LINE__)
/* Poison the raw allocating identifiers in favor of our vsh variants. */
# undef malloc
# undef calloc
# undef realloc
# undef strdup
# define malloc use_vshMalloc_instead_of_malloc
# define calloc use_vshCalloc_instead_of_calloc
# define realloc use_vshRealloc_instead_of_realloc
# define strdup use_vshStrdup_instead_of_strdup
#endif /* VIRSH_H */
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