/* * utils.h: common, generic utility functions * * Copyright (C) 2010-2012 Red Hat, Inc. * Copyright (C) 2006, 2007 Binary Karma * Copyright (C) 2006 Shuveb Hussain * * 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, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA * * File created Jul 18, 2007 - Shuveb Hussain */ #ifndef __VIR_UTIL_H__ # define __VIR_UTIL_H__ # include "verify.h" # include "internal.h" # include # include # include # include # ifndef MIN # define MIN(a, b) ((a) < (b) ? (a) : (b)) # endif # ifndef MAX # define MAX(a, b) ((a) > (b) ? (a) : (b)) # endif ssize_t saferead(int fd, void *buf, size_t count) ATTRIBUTE_RETURN_CHECK; ssize_t safewrite(int fd, const void *buf, size_t count) ATTRIBUTE_RETURN_CHECK; int safezero(int fd, off_t offset, off_t len) ATTRIBUTE_RETURN_CHECK; int virSetBlocking(int fd, bool blocking) ATTRIBUTE_RETURN_CHECK; int virSetNonBlock(int fd) ATTRIBUTE_RETURN_CHECK; int virSetInherit(int fd, bool inherit) ATTRIBUTE_RETURN_CHECK; int virSetCloseExec(int fd) ATTRIBUTE_RETURN_CHECK; int virPipeReadUntilEOF(int outfd, int errfd, char **outbuf, char **errbuf); int virSetUIDGID(uid_t uid, gid_t gid); int virFileReadLimFD(int fd, int maxlen, char **buf) ATTRIBUTE_RETURN_CHECK; int virFileReadAll(const char *path, int maxlen, char **buf) ATTRIBUTE_RETURN_CHECK; int virFileWriteStr(const char *path, const char *str, mode_t mode) ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(2) ATTRIBUTE_RETURN_CHECK; int virFileMatchesNameSuffix(const char *file, const char *name, const char *suffix); int virFileHasSuffix(const char *str, const char *suffix); int virFileStripSuffix(char *str, const char *suffix) ATTRIBUTE_RETURN_CHECK; int virFileLinkPointsTo(const char *checkLink, const char *checkDest); int virFileResolveLink(const char *linkpath, char **resultpath) ATTRIBUTE_RETURN_CHECK; int virFileResolveAllLinks(const char *linkpath, char **resultpath) ATTRIBUTE_RETURN_CHECK; int virFileIsLink(const char *linkpath) ATTRIBUTE_NONNULL(1) ATTRIBUTE_RETURN_CHECK; char *virFindFileInPath(const char *file); bool virFileExists(const char *file) ATTRIBUTE_NONNULL(1); bool virFileIsExecutable(const char *file) ATTRIBUTE_NONNULL(1); char *virFileSanitizePath(const char *path); enum { VIR_FILE_OPEN_NONE = 0, VIR_FILE_OPEN_NOFORK = (1 << 0), VIR_FILE_OPEN_FORK = (1 << 1), VIR_FILE_OPEN_FORCE_MODE = (1 << 2), VIR_FILE_OPEN_FORCE_OWNER = (1 << 3), }; int virFileAccessibleAs(const char *path, int mode, uid_t uid, gid_t gid) ATTRIBUTE_NONNULL(1) ATTRIBUTE_RETURN_CHECK; int virFileOpenAs(const char *path, int openflags, mode_t mode, uid_t uid, gid_t gid, unsigned int flags) ATTRIBUTE_NONNULL(1) ATTRIBUTE_RETURN_CHECK; enum { VIR_DIR_CREATE_NONE = 0, VIR_DIR_CREATE_AS_UID = (1 << 0), VIR_DIR_CREATE_FORCE_PERMS = (1 << 1), VIR_DIR_CREATE_ALLOW_EXIST = (1 << 2), }; int virDirCreate(const char *path, mode_t mode, uid_t uid, gid_t gid, unsigned int flags) ATTRIBUTE_RETURN_CHECK; int virFileMakePath(const char *path) ATTRIBUTE_RETURN_CHECK; char *virFileBuildPath(const char *dir, const char *name, const char *ext) ATTRIBUTE_RETURN_CHECK; int virFileAbsPath(const char *path, char **abspath) ATTRIBUTE_RETURN_CHECK; int virFileOpenTty(int *ttymaster, char **ttyName, int rawmode); char *virArgvToString(const char *const *argv); int virStrToLong_i(char const *s, char **end_ptr, int base, int *result); int virStrToLong_ui(char const *s, char **end_ptr, int base, unsigned int *result); int virStrToLong_l(char const *s, char **end_ptr, int base, long *result); int virStrToLong_ul(char const *s, char **end_ptr, int base, unsigned long *result); int virStrToLong_ll(char const *s, char **end_ptr, int base, long long *result); int virStrToLong_ull(char const *s, char **end_ptr, int base, unsigned long long *result); int virStrToDouble(char const *s, char **end_ptr, double *result); int virScaleInteger(unsigned long long *value, const char *suffix, unsigned long long scale, unsigned long long limit) ATTRIBUTE_NONNULL(1) ATTRIBUTE_RETURN_CHECK; int virHexToBin(unsigned char c); void virSkipSpaces(const char **str) ATTRIBUTE_NONNULL(1); void virSkipSpacesAndBackslash(const char **str) ATTRIBUTE_NONNULL(1); void virTrimSpaces(char *str, char **endp) ATTRIBUTE_NONNULL(1); void virSkipSpacesBackwards(const char *str, char **endp) ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(2); int virParseNumber(const char **str); int virParseVersionString(const char *str, unsigned long *version, bool allowMissing); int virAsprintf(char **strp, const char *fmt, ...) ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(2) ATTRIBUTE_FMT_PRINTF(2, 3); int virVasprintf(char **strp, const char *fmt, va_list list) ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(2) ATTRIBUTE_FMT_PRINTF(2, 0); char *virStrncpy(char *dest, const char *src, size_t n, size_t destbytes) ATTRIBUTE_RETURN_CHECK; char *virStrcpy(char *dest, const char *src, size_t destbytes) ATTRIBUTE_RETURN_CHECK; # define virStrcpyStatic(dest, src) virStrcpy((dest), (src), sizeof(dest)) int virDiskNameToIndex(const char* str); char *virIndexToDiskName(int idx, const char *prefix); int virEnumFromString(const char *const*types, unsigned int ntypes, const char *type); const char *virEnumToString(const char *const*types, unsigned int ntypes, int type); # define VIR_ENUM_IMPL(name, lastVal, ...) \ static const char *const name ## TypeList[] = { __VA_ARGS__ }; \ verify(ARRAY_CARDINALITY(name ## TypeList) == lastVal); \ const char *name ## TypeToString(int type) { \ return virEnumToString(name ## TypeList, \ ARRAY_CARDINALITY(name ## TypeList), \ type); \ } \ int name ## TypeFromString(const char *type) { \ return virEnumFromString(name ## TypeList, \ ARRAY_CARDINALITY(name ## TypeList), \ type); \ } # define VIR_ENUM_DECL(name) \ const char *name ## TypeToString(int type); \ int name ## TypeFromString(const char*type); # ifndef HAVE_GETUID static inline int getuid (void) { return 0; } # endif # ifndef HAVE_GETEUID static inline int geteuid (void) { return 0; } # endif # ifndef HAVE_GETGID static inline int getgid (void) { return 0; } # endif char *virGetHostname(virConnectPtr conn); int virKillProcess(pid_t pid, int sig); char *virGetUserDirectory(uid_t uid); char *virGetUserName(uid_t uid); char *virGetGroupName(gid_t gid); int virGetUserID(const char *name, uid_t *uid) ATTRIBUTE_RETURN_CHECK; int virGetGroupID(const char *name, gid_t *gid) ATTRIBUTE_RETURN_CHECK; char *virFileFindMountPoint(const char *type); void virFileWaitForDevices(void); # define virBuildPath(path, ...) virBuildPathInternal(path, __VA_ARGS__, NULL) int virBuildPathInternal(char **path, ...) ATTRIBUTE_SENTINEL; bool virIsDevMapperDevice(const char *dev_name) ATTRIBUTE_NONNULL(1); #endif /* __VIR_UTIL_H__ */