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1597e155b2
Signed-off-by: Filip Alac <filipalac@gmail.com> Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
233 lines
7.2 KiB
C
233 lines
7.2 KiB
C
/*
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* virutil.h: common, generic utility functions
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*
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* Copyright (C) 2010-2014 Red Hat, Inc.
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* Copyright (C) 2006, 2007 Binary Karma
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* Copyright (C) 2006 Shuveb Hussain
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library. If not, see
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* <http://www.gnu.org/licenses/>.
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*
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* File created Jul 18, 2007 - Shuveb Hussain <shuveb@binarykarma.com>
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*/
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#ifndef __VIR_UTIL_H__
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# define __VIR_UTIL_H__
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# include "internal.h"
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# include <unistd.h>
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# include <sys/types.h>
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# ifndef MIN
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# define MIN(a, b) ((a) < (b) ? (a) : (b))
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# endif
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# ifndef MAX
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# define MAX(a, b) ((a) > (b) ? (a) : (b))
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# endif
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int virSetBlocking(int fd, bool blocking) ATTRIBUTE_RETURN_CHECK;
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int virSetNonBlock(int fd) ATTRIBUTE_RETURN_CHECK;
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int virSetInherit(int fd, bool inherit) ATTRIBUTE_RETURN_CHECK;
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int virSetCloseExec(int fd) ATTRIBUTE_RETURN_CHECK;
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int virSetSockReuseAddr(int fd, bool fatal) ATTRIBUTE_RETURN_CHECK;
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int virPipeReadUntilEOF(int outfd, int errfd,
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char **outbuf, char **errbuf);
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int virSetUIDGID(uid_t uid, gid_t gid, gid_t *groups, int ngroups);
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int virSetUIDGIDWithCaps(uid_t uid, gid_t gid, gid_t *groups, int ngroups,
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unsigned long long capBits,
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bool clearExistingCaps);
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void virWaitForDevices(void);
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int virScaleInteger(unsigned long long *value, const char *suffix,
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unsigned long long scale, unsigned long long limit)
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ATTRIBUTE_NONNULL(1) ATTRIBUTE_RETURN_CHECK;
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int virHexToBin(unsigned char c);
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int virParseNumber(const char **str);
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int virParseVersionString(const char *str, unsigned long *version,
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bool allowMissing);
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char *virFormatIntDecimal(char *buf, size_t buflen, int val)
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ATTRIBUTE_NONNULL(1) ATTRIBUTE_RETURN_CHECK;
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unsigned long long
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virFormatIntPretty(unsigned long long val,
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const char **unit);
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int virDiskNameParse(const char *name, int *disk, int *partition);
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int virDiskNameToIndex(const char* str);
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char *virIndexToDiskName(int idx, const char *prefix);
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int virEnumFromString(const char *const*types,
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unsigned int ntypes,
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const char *type);
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const char *virEnumToString(const char *const*types,
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unsigned int ntypes,
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int type);
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# define VIR_ENUM_IMPL(name, lastVal, ...) \
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static const char *const name ## TypeList[] = { __VA_ARGS__ }; \
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verify(ARRAY_CARDINALITY(name ## TypeList) == lastVal); \
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const char *name ## TypeToString(int type) { \
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return virEnumToString(name ## TypeList, \
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ARRAY_CARDINALITY(name ## TypeList), \
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type); \
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} \
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int name ## TypeFromString(const char *type) { \
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return virEnumFromString(name ## TypeList, \
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ARRAY_CARDINALITY(name ## TypeList), \
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type); \
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}
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# define VIR_ENUM_DECL(name) \
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const char *name ## TypeToString(int type); \
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int name ## TypeFromString(const char*type);
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/* No-op workarounds for functionality missing in mingw. */
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# ifndef HAVE_GETUID
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static inline int getuid(void)
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{ return 0; }
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# endif
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# ifndef HAVE_GETEUID
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static inline int geteuid(void)
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{ return 0; }
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# endif
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# ifndef HAVE_GETGID
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static inline int getgid(void)
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{ return 0; }
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# endif
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# ifndef HAVE_GETEGID
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static inline int getegid(void)
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{ return 0; }
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# endif
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# ifdef FUNC_PTHREAD_SIGMASK_BROKEN
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# undef pthread_sigmask
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static inline int pthread_sigmask(int how,
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const void *set,
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void *old)
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{
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(void) how;
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(void) set;
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(void) old;
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return 0;
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}
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# endif
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char *virGetHostname(void);
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char *virGetHostnameQuiet(void);
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char *virGetUserDirectory(void);
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char *virGetUserDirectoryByUID(uid_t uid);
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char *virGetUserConfigDirectory(void);
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char *virGetUserCacheDirectory(void);
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char *virGetUserRuntimeDirectory(void);
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char *virGetUserShell(uid_t uid);
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char *virGetUserName(uid_t uid) ATTRIBUTE_NOINLINE;
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char *virGetGroupName(gid_t gid) ATTRIBUTE_NOINLINE;
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int virGetGroupList(uid_t uid, gid_t group, gid_t **groups)
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ATTRIBUTE_NONNULL(3);
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int virGetUserID(const char *name,
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uid_t *uid) ATTRIBUTE_RETURN_CHECK;
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int virGetGroupID(const char *name,
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gid_t *gid) ATTRIBUTE_RETURN_CHECK;
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bool virIsDevMapperDevice(const char *dev_name) ATTRIBUTE_NONNULL(1);
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bool virValidateWWN(const char *wwn);
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int virGetDeviceID(const char *path,
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int *maj,
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int *min);
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int virSetDeviceUnprivSGIO(const char *path,
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const char *sysfs_dir,
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int unpriv_sgio);
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int virGetDeviceUnprivSGIO(const char *path,
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const char *sysfs_dir,
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int *unpriv_sgio);
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char *virGetUnprivSGIOSysfsPath(const char *path,
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const char *sysfs_dir);
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int virParseOwnershipIds(const char *label, uid_t *uidPtr, gid_t *gidPtr);
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const char *virGetEnvBlockSUID(const char *name);
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const char *virGetEnvAllowSUID(const char *name);
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bool virIsSUID(void);
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time_t virGetSelfLastChanged(void);
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void virUpdateSelfLastChanged(const char *path);
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typedef enum {
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VIR_TRISTATE_BOOL_ABSENT = 0,
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VIR_TRISTATE_BOOL_YES,
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VIR_TRISTATE_BOOL_NO,
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VIR_TRISTATE_BOOL_LAST
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} virTristateBool;
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typedef enum {
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VIR_TRISTATE_SWITCH_ABSENT = 0,
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VIR_TRISTATE_SWITCH_ON,
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VIR_TRISTATE_SWITCH_OFF,
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VIR_TRISTATE_SWITCH_LAST
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} virTristateSwitch;
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VIR_ENUM_DECL(virTristateBool)
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VIR_ENUM_DECL(virTristateSwitch)
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virTristateBool virTristateBoolFromBool(bool val);
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virTristateSwitch virTristateSwitchFromBool(bool val);
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/* the two enums must be in sync to be able to use helpers interchangeably in
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* some special cases */
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verify((int)VIR_TRISTATE_BOOL_YES == (int)VIR_TRISTATE_SWITCH_ON);
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verify((int)VIR_TRISTATE_BOOL_NO == (int)VIR_TRISTATE_SWITCH_OFF);
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verify((int)VIR_TRISTATE_BOOL_ABSENT == (int)VIR_TRISTATE_SWITCH_ABSENT);
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unsigned int virGetListenFDs(void);
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char *virGetUNIXSocketPath(int fd);
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long virGetSystemPageSize(void) ATTRIBUTE_NOINLINE;
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long virGetSystemPageSizeKB(void) ATTRIBUTE_NOINLINE;
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unsigned long long virMemoryLimitTruncate(unsigned long long value);
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bool virMemoryLimitIsSet(unsigned long long value);
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unsigned long long virMemoryMaxValue(bool ulong) ATTRIBUTE_NOINLINE;
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bool virHostHasIOMMU(void);
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/**
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* VIR_ASSIGN_IS_OVERFLOW:
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* @rvalue: value that is checked (evaluated twice)
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* @lvalue: value that the check is against (used in typeof())
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*
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* This macro assigns @lvalue to @rvalue and evaluates as true if the value of
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* @rvalue did not fit into the @lvalue.
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*/
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# define VIR_ASSIGN_IS_OVERFLOW(lvalue, rvalue) \
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(((lvalue) = (rvalue)) != (rvalue))
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#endif /* __VIR_UTIL_H__ */
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