posixFileCommon Class Reference

#include <posixFileCommon.h>

Inheritance diagram for posixFileCommon:

Collaboration diagram for posixFileCommon:

Public Member Functions
bool	pathExists (const std::string &path) override
std::unique_ptr< const genericStat >	getStat (const std::string &path, bool followLink) override
std::string	getXattr (const std::string &path, const std::string &name) override
Public Member Functions inherited from pathHandler
virtual	~pathHandler ()=default

Detailed Description

Definition at line 6 of file posixFileCommon.h.

Member Function Documentation

getStat()

std::unique_ptr< const genericStat > posixFileCommon::getStat ( const std::string &  path, bool  followLink  )

overridevirtual

Implements pathHandler.

Definition at line 30 of file posixFileCommon.cpp.

                         {
    struct stat statBuf;
    for (int retries = 100; retries; --retries) {
        if (followLink) {
            timerInst(stat);
            auto result = stat(path.c_str(), &statBuf);
            if (result && errno == ENOENT) {
                return nullptr;
            } else if (result && errno == ENOTDIR) {
                errMsg::emit(errMsg::level::info, errMsg::location(),
                             path, "stat", "found @#$%@ gpfs err ", errno);
                continue;
            }
            throwcall::good0(result, "can't stat", path);
        } else {
            timerInst(lstat);
            auto result = lstat(path.c_str(), &statBuf);
            if (result && errno == ENOENT) {
                return nullptr;
            } else if (result && errno == ENOTDIR) {
                errMsg::emit(errMsg::level::info, errMsg::location(),
                             path, "lstat", "found @#$%@ gpfs err", errno);
                continue;
            }
            throwcall::good0(result, "can't lstat", path);
        }
        break;
    }
    return std::unique_ptr<const genericStat>(new genericStat(statBuf, std::chrono::nanoseconds(1)));
};

References errMsg::emit(), throwcall::good0(), errMsg::info, and timerInst.

Referenced by inputHandler::dummy::getStat().

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getXattr()

std::string posixFileCommon::getXattr ( const std::string &  path, const std::string &  name  )

overridevirtual

Reimplemented from pathHandler.

Definition at line 63 of file posixFileCommon.cpp.

                                                             {
    #if defined(WithXattr) || defined(WithXattrUgly)
    char buffer[512];
 
    for (int i = 0; i < 100; i++) {
        timerInst(lgetxattr);
        auto retval = lgetxattr(path.c_str(), name.c_str(), buffer, sizeof(buffer));
 
        if (retval == -1) {
            if (errno == ENOENT || errno == ENOATTR) {
                return "";
            } else if (errno == ENOTDIR) { // we ran against a GPFS bug
                errMsg::emit(errMsg::level::info, errMsg::location(),
                             path, "lgetxattr",
                             "got a f*^%$&^%$ GPFS bug", errno);
                continue; // try again
            }
            throwcall::badval(retval, -1, "can't get xattr on ", path);
        }
        buffer[retval] = '\0';
        break;
    }
    return buffer;
    #else
    throw unimplementedActionError("no xattr support");
    #endif
};

References throwcall::badval(), errMsg::emit(), ENOATTR, errMsg::info, and timerInst.

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pathExists()

bool posixFileCommon::pathExists ( const std::string &  path )

overridevirtual

Implements pathHandler.

Definition at line 20 of file posixFileCommon.cpp.

                                                      {
    struct stat statBuf;
    timerInst(stat);
    auto result = stat(path.c_str(), &statBuf);
    if (result && (errno == ENOENT || errno == ENOTDIR)) {
        return false;
    }
    throwcall::good0(result, "can't stat ", path);
    return true;
};

References throwcall::good0(), and timerInst.

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The documentation for this class was generated from the following files:

• src/posixFileCommon.h (v0.19-24-g0617ca1 with changes)
• src/posixFileCommon.cpp (v0.19-24-g0617ca1 with changes)