#include <sys/types.h>
#include <sys/xattr.h>
#include <dirent.h>
#include <errno.h>
#include <fcntl.h>
#include <limits.h>
#include <mntent.h>
#include <pthread.h>
#include <signal.h>
#include <sys/file.h>
#include <sys/mount.h>
#include <sys/prctl.h>
#include <sys/select.h>
#include <sys/stat.h>
#include <sys/utsname.h>
#include <unistd.h>
#include <cassert>
#include <cstdio>
#include <cstdlib>
#include <cstring>
#include <ctime>
#include <string>
#include <vector>
#include "util/smalloc.h"

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Macros
#define	platform_sighandler_t sighandler_t

#define	MNT_DETACH 0x00000002

Typedefs
typedef pthread_spinlock_t	platform_spinlock

typedef struct dirent64	platform_dirent64

typedef struct stat64	platform_stat64

Functions
std::vector< std::string >	platform_mountlist ()

bool	platform_umount (const char *mountpoint, const bool lazy)

bool	platform_umount_lazy (const char *mountpoint)

int	platform_spinlock_init (platform_spinlock *lock, int pshared)

int	platform_spinlock_destroy (platform_spinlock *lock)

int	platform_spinlock_trylock (platform_spinlock *lock)

void	platform_spinlock_unlock (platform_spinlock *lock)

pthread_t	platform_gettid ()

int	platform_sigwait (const int signum)

bool	platform_allow_ptrace (const pid_t pid)

platform_dirent64 *	platform_readdir (DIR *dirp)

int	platform_stat (const char path, platform_stat64 buf)

int	platform_lstat (const char path, platform_stat64 buf)

int	platform_fstat (int filedes, platform_stat64 *buf)

bool	platform_getxattr (const std::string &path, const std::string &name, std::string *value)

bool	platform_setxattr (const std::string &path, const std::string &name, const std::string &value)

bool	platform_lsetxattr (const std::string &path, const std::string &name, const std::string &value)

ssize_t	platform_lgetxattr (const char path, const char name, void *value, size_t size)

ssize_t	platform_llistxattr (const char path, char list, size_t size)

void	platform_disable_kcache (int filedes)

ssize_t	platform_readahead (int filedes)

int	platform_invalidate_kcache (const int fd, const off_t offset, const off_t length)

std::string	platform_libname (const std::string &base_name)

std::string	platform_getexepath ()

struct timespec	platform_time_with_clock (int clock)

uint64_t	platform_monotonic_time ()

uint64_t	platform_monotonic_time_ns ()

uint64_t	platform_realtime_ns ()

uint64_t	platform_memsize ()

Macro Definition Documentation

#define MNT_DETACH 0x00000002

Definition at line 57 of file platform_linux.h.

Referenced by platform_umount(), and platform_umount_lazy().

#define platform_sighandler_t sighandler_t

This file is part of the CernVM File System.

Linux specific system/library calls.

Definition at line 42 of file platform_linux.h.

Referenced by CachePlugin::MainProcessRequests(), and Watchdog::WaitForSupervisee().

Typedef Documentation

typedef struct dirent64 platform_dirent64

File system functions, ensure 64bit versions.

Definition at line 202 of file platform_linux.h.

typedef pthread_spinlock_t platform_spinlock

Spinlocks are not necessarily part of pthread on all platforms.

Definition at line 143 of file platform_linux.h.

typedef struct stat64 platform_stat64

Definition at line 208 of file platform_linux.h.

Function Documentation

bool platform_allow_ptrace ( const pid_t pid )

inline

Grants a PID capabilities for ptrace() usage

Parameters

PID	the PID of the process to be granted ptrace()-access (may be ignored)

Returns: true when successful

Definition at line 183 of file platform_linux.h.

Referenced by Watchdog::Spawn().

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void platform_disable_kcache ( int filedes )

inline

Definition at line 271 of file platform_linux.h.

Referenced by cipher::Key::CreateFromFile(), MainCheck(), and cipher::Key::SaveToFile().

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int platform_fstat	(	int	filedes,
		platform_stat64 *	buf
	)

inline

Definition at line 218 of file platform_linux.h.

Referenced by zlib::CompressPath2Path(), CopyPath2File(), CopyPath2Path(), cipher::Key::CreateFromFile(), AuthzSessionManager::GetPidInfo(), PosixCacheManager::GetSize(), FileIngestionSource::GetSize(), MemoryMappedFile::Map(), ObjectPackProducer::ObjectPackProducer(), swissknife::CommandGraft::Publish(), and SetLogMicroSyslog().

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std::string platform_getexepath ( )

inline

Definition at line 311 of file platform_linux.h.

pthread_t platform_gettid ( )

inline

pthread_self() is not necessarily an unsigned long.

Definition at line 164 of file platform_linux.h.

Referenced by anonymous_namespace{crypto_util.cc}::CallbackLibcryptoThreadId().

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bool platform_getxattr	(	const std::string &	path,
		const std::string &	name,
		std::string *	value
	)

inline

Definition at line 223 of file platform_linux.h.

Referenced by publish::CmdEnter::CleanupSession(), publish::CmdEnter::GetCvmfsXattr(), publish::SettingsPublisher::GetReadOnlyXAttr(), InitSystemFs(), KillCvmfs(), and swissknife::CommandInfo::Main().

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int platform_invalidate_kcache	(	const int	fd,
		const off_t	offset,
		const off_t	length
	)

inline

Advises the kernel to evict the given file region from the page cache.

Note: Pages containing the data at offset and offset + length are NOT evicted by the kernel. This means that a few pages are not purged when offset and length are not exactly on page boundaries. See below:

     offset                                  length
       |                                        |

+------—+-—|-—+------—+------—+------—+--—|—+------—+ | | | | xxxxxxx | xxxxxxx | xxxxxxx | | | | | | | | xxxxxxx | xxxxxxx | xxxxxxx | | | | +------—+-—|-—+------—+------—+------—+--—|—+------—+ 0 4096 | 8192 12288 16384 20480 | 24576 28672

git.kernel.org/cgit/linux/kernel/git/stable/linux-stable.git/tree/mm/fadvise.c#n115

TODO(rmeusel): figure out a clever way how to align offset and length

Parameters

fd	file descriptor whose page cache should be (partially) evicted
offset	start offset of the pages to be evicted
length	number of bytes to be evicted

Definition at line 302 of file platform_linux.h.

Referenced by FileIngestionSource::Close().

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ssize_t platform_lgetxattr	(	const char *	path,
		const char *	name,
		void *	value,
		size_t	size
	)

inline

Definition at line 262 of file platform_linux.h.

Referenced by XattrList::CreateFromFile().

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std::string platform_libname ( const std::string & base_name )

inline

Definition at line 307 of file platform_linux.h.

Referenced by loader::LoadLibrary(), and main().

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ssize_t platform_llistxattr	(	const char *	path,
		char *	list,
		size_t	size
	)

inline

Definition at line 267 of file platform_linux.h.

Referenced by XattrList::CreateFromFile().

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bool platform_lsetxattr	(	const std::string &	path,
		const std::string &	name,
		const std::string &	value
	)

inline

Definition at line 255 of file platform_linux.h.

Referenced by PosixSetMeta().

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int platform_lstat	(	const char *	path,
		platform_stat64 *	buf
	)

inline

Definition at line 214 of file platform_linux.h.

Referenced by DiffTree(), DirectoryExists(), FileSystemTraversal< T >::DoRecursion(), FileExists(), swissknife::CommandApplyDirtab::FilterCandidatesFromGlobResult(), GetNextFile(), ListDirectory(), main(), ScopedWorkingDirectory::NextDirectoryEntry(), anonymous_namespace{cmd_enter.cc}::RemoveSingle(), RemoveTree(), publish::SyncItem::StatGeneric(), and SymlinkExists().

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uint64_t platform_memsize ( )

inline

Definition at line 349 of file platform_linux.h.

Referenced by PluginRamCache::Create(), IngestionPipeline::IngestionPipeline(), and FileSystem::SetupRamCacheMgr().

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uint64_t platform_monotonic_time ( )

inline

Definition at line 328 of file platform_linux.h.

Referenced by glue::DentryTracker::Add(), s3fanout::S3FanoutManager::Backoff(), s3fanout::CallbackCurlHeader(), receiver::CheckToken(), cvmfs::cvmfs_statfs(), AuthzExternalFetcher::EnterFailState(), AuthzExternalFetcher::Fetch(), shrinkwrap::GarbageCollect(), receiver::GenerateSessionToken(), perf::Recorder::GetNoTicks(), AuthzSessionManager::LookupAuthzData(), AuthzSessionManager::LookupSessionKey(), glue::DentryTracker::MainCleaner(), FuseInvalidator::MainInvalidator(), FuseRemounter::MainRemountTrigger(), perf::TelemetryAggregator::MainTelemetry(), AuthzSessionManager::MaySweepCreds(), AuthzSessionManager::MaySweepPids(), glue::DentryTracker::Prune(), AuthzExternalFetcher::ReapHelper(), Supervisor::Run(), shrinkwrap::SyncFull(), shrinkwrap::SyncInit(), perf::Recorder::Tick(), perf::MultiRecorder::Tick(), and publish::TransactionRetry().

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uint64_t platform_monotonic_time_ns ( )

inline

Definition at line 337 of file platform_linux.h.

Referenced by ReadHalfPipe(), catalog::AbstractCatalogManager< Catalog >::WriteLock(), and HighPrecisionTimer::~HighPrecisionTimer().

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std::vector<std::string> platform_mountlist ( )

inline

Definition at line 44 of file platform_linux.h.

Referenced by IsMountPoint(), anonymous_namespace{cmd_enter.cc}::RemoveUnderlay(), and auto_umount::UmountOnCrash().

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ssize_t platform_readahead ( int filedes )

inline

Definition at line 275 of file platform_linux.h.

Referenced by sqlite::Database< DerivedT >::FileReadAhead().

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platform_dirent64* platform_readdir ( DIR * dirp )

inline

Definition at line 204 of file platform_linux.h.

Referenced by PosixQuotaManager::CleanupPipes(), CloseAllFildesInProcSelfFd(), DiffTree(), FileSystemTraversal< T >::DoRecursion(), AuthzExternalFetcher::ExecHelper(), FindDirectories(), FindFilesByPrefix(), FindFilesBySuffix(), GetNextFile(), anonymous_namespace{ssl.cc}::HasCertificates(), ListDirectory(), main(), ScopedWorkingDirectory::NextDirectoryEntry(), and PosixQuotaManager::RebuildDatabase().

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uint64_t platform_realtime_ns ( )

inline

Definition at line 343 of file platform_linux.h.

Referenced by RepositoryTag::SetGenericName(), and perf::Statistics::SnapshotCounters().

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bool platform_setxattr	(	const std::string &	path,
		const std::string &	name,
		const std::string &	value
	)

inline

Definition at line 248 of file platform_linux.h.

int platform_sigwait ( const int signum )

inline

Definition at line 166 of file platform_linux.h.

Referenced by WaitForSignal().

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int platform_spinlock_destroy ( platform_spinlock * lock )

inline

Definition at line 149 of file platform_linux.h.

Referenced by Watchdog::~Watchdog().

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int platform_spinlock_init	(	platform_spinlock *	lock,
		int	pshared
	)

inline

Definition at line 145 of file platform_linux.h.

Referenced by Watchdog::Watchdog().

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int platform_spinlock_trylock ( platform_spinlock * lock )

inline

Definition at line 153 of file platform_linux.h.

Referenced by Watchdog::SendTrace().

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void platform_spinlock_unlock ( platform_spinlock * lock )

inline

Definition at line 157 of file platform_linux.h.

int platform_stat	(	const char *	path,
		platform_stat64 *	buf
	)

inline

Definition at line 210 of file platform_linux.h.

Referenced by AttachMount(), CheckFuse(), PosixQuotaManager::CleanupPipes(), swissknife::CommandGraft::DirCallback(), FindDirectories(), FindExecutable(), GetFileSize(), anonymous_namespace{ssl.cc}::HasCertificates(), Lsof(), swissknife::CommandGraft::Main(), MakeCacheDirectories(), MkdirDeep(), Mount(), FileSystem::SetupCrashGuard(), and download::DownloadManager::SetUrlOptions().

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struct timespec platform_time_with_clock ( int clock )

Definition at line 321 of file platform_linux.h.

Referenced by platform_monotonic_time(), platform_monotonic_time_ns(), and platform_realtime_ns().

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bool platform_umount	(	const char *	mountpoint,
		const bool	lazy
	)

inline

Definition at line 59 of file platform_linux.h.

Referenced by auto_umount::UmountOnCrash().

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bool platform_umount_lazy ( const char * mountpoint )

inline

Definition at line 135 of file platform_linux.h.

Referenced by publish::CmdEnter::CleanupSession(), and anonymous_namespace{cmd_enter.cc}::RemoveUnderlay().

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Macros

Typedefs

Functions

Macro Definition Documentation

Typedef Documentation

Function Documentation