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For Bug 543:

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Standardize the error messages to be in "path: what failed: why" format.
Also attempt to use the correct errno to ThrowErrno in situations where
the errno value is erased by subsequent system calls.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21385 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Reid Spencer 2005-04-21 02:50:10 +00:00
parent 03aee2e3f2
commit 2aafadcc76
1 changed files with 24 additions and 24 deletions
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48
lib/System/Unix/Path.inc
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@ -91,7 +91,7 @@ Path::GetTemporaryDirectory() {
char pathname[MAXPATHLEN]; char pathname[MAXPATHLEN];
strcpy(pathname,"/tmp/llvm_XXXXXX"); strcpy(pathname,"/tmp/llvm_XXXXXX");
if (0 == mkdtemp(pathname)) if (0 == mkdtemp(pathname))
ThrowErrno(std::string(pathname) + ": Can't create temporary directory"); ThrowErrno(std::string(pathname) + ": can't create temporary directory");
Path result; Path result;
result.setDirectory(pathname); result.setDirectory(pathname);
assert(result.isValid() && "mkdtemp didn't create a valid pathname!"); assert(result.isValid() && "mkdtemp didn't create a valid pathname!");
@ -106,11 +106,11 @@ Path::GetTemporaryDirectory() {
strcpy(pathname, "/tmp/llvm_XXXXXX"); strcpy(pathname, "/tmp/llvm_XXXXXX");
int fd = 0; int fd = 0;
if (-1 == (fd = mkstemp(pathname))) if (-1 == (fd = mkstemp(pathname)))
ThrowErrno(std::string(pathname) + ": Can't create temporary directory"); ThrowErrno(std::string(pathname) + ": can't create temporary directory");
::close(fd); ::close(fd);
::unlink(pathname); // start race condition, ignore errors ::unlink(pathname); // start race condition, ignore errors
if (-1 == ::mkdir(pathname, S_IRWXU)) // end race condition if (-1 == ::mkdir(pathname, S_IRWXU)) // end race condition
ThrowErrno(std::string(pathname) + ": Can't create temporary directory"); ThrowErrno(std::string(pathname) + ": can't create temporary directory");
Path result; Path result;
result.setDirectory(pathname); result.setDirectory(pathname);
assert(result.isValid() && "mkstemp didn't create a valid pathname!"); assert(result.isValid() && "mkstemp didn't create a valid pathname!");
@ -125,9 +125,9 @@ Path::GetTemporaryDirectory() {
strcpy(pathname, "/tmp/llvm_XXXXXX"); strcpy(pathname, "/tmp/llvm_XXXXXX");
char *TmpName = ::mktemp(pathname); char *TmpName = ::mktemp(pathname);
if (TmpName == 0) if (TmpName == 0)
throw std::string(TmpName) + ": Can't create unique directory name"; ThrowErrno(std::string(TmpName) + ": can't create unique directory name");
if (-1 == ::mkdir(TmpName, S_IRWXU)) if (-1 == ::mkdir(TmpName, S_IRWXU))
ThrowErrno(std::string(TmpName) + ": Can't create temporary directory"); ThrowErrno(std::string(TmpName) + ": can't create temporary directory");
Path result; Path result;
result.setDirectory(TmpName); result.setDirectory(TmpName);
assert(result.isValid() && "mktemp didn't create a valid pathname!"); assert(result.isValid() && "mktemp didn't create a valid pathname!");
@ -148,7 +148,7 @@ Path::GetTemporaryDirectory() {
sprintf(pathname, "/tmp/llvm_%010u", unsigned(num)); sprintf(pathname, "/tmp/llvm_%010u", unsigned(num));
} while ( 0 == access(pathname, F_OK ) ); } while ( 0 == access(pathname, F_OK ) );
if (-1 == ::mkdir(pathname, S_IRWXU)) if (-1 == ::mkdir(pathname, S_IRWXU))
ThrowErrno(std::string(pathname) + ": Can't create temporary directory"); ThrowErrno(std::string(pathname) + ": can't create temporary directory");
Path result; Path result;
result.setDirectory(pathname); result.setDirectory(pathname);
assert(result.isValid() && "mkstemp didn't create a valid pathname!"); assert(result.isValid() && "mkstemp didn't create a valid pathname!");
@ -344,7 +344,7 @@ void
Path::getStatusInfo(StatusInfo& info) const { Path::getStatusInfo(StatusInfo& info) const {
struct stat buf; struct stat buf;
if (0 != stat(path.c_str(), &buf)) { if (0 != stat(path.c_str(), &buf)) {
ThrowErrno(std::string("Can't get status for path: ")+path); ThrowErrno(path + ": can't determine type of path object: ");
} }
info.fileSize = buf.st_size; info.fileSize = buf.st_size;
info.modTime.fromEpochTime(buf.st_mtime); info.modTime.fromEpochTime(buf.st_mtime);
@ -407,12 +407,12 @@ Path::getDirectoryContents(std::set<Path>& result) const {
Path aPath(path + (const char*)de->d_name); Path aPath(path + (const char*)de->d_name);
struct stat buf; struct stat buf;
if (0 != stat(aPath.path.c_str(), &buf)) { if (0 != stat(aPath.path.c_str(), &buf)) {
int saved_errno = errno; int stat_errno = errno;
struct stat st; struct stat st;
if (0 == lstat(aPath.path.c_str(), &st) && S_ISLNK(st.st_mode)) if (0 == lstat(aPath.path.c_str(), &st) && S_ISLNK(st.st_mode))
continue; // dangling symlink -- ignore continue; // dangling symlink -- ignore
errno = saved_errno; ThrowErrno(aPath.path +
ThrowErrno(aPath.path + ": can't get status"); ": can't determine file object type", stat_errno);
} }
if (S_ISDIR(buf.st_mode)) if (S_ISDIR(buf.st_mode))
aPath.path += "/"; aPath.path += "/";
@ -566,7 +566,7 @@ Path::createDirectory( bool create_parents) {
*next = 0; *next = 0;
if (0 != access(pathname, F_OK | R_OK | W_OK)) if (0 != access(pathname, F_OK | R_OK | W_OK))
if (0 != mkdir(pathname, S_IRWXU | S_IRWXG)) if (0 != mkdir(pathname, S_IRWXU | S_IRWXG))
ThrowErrno(std::string(pathname) + ": Can't create directory"); ThrowErrno(std::string(pathname) + ": can't create directory");
char* save = next; char* save = next;
next = strchr(next+1,'/'); next = strchr(next+1,'/');
*save = '/'; *save = '/';
@ -575,7 +575,7 @@ Path::createDirectory( bool create_parents) {
if (0 != access(pathname, F_OK | R_OK)) if (0 != access(pathname, F_OK | R_OK))
if (0 != mkdir(pathname, S_IRWXU | S_IRWXG)) if (0 != mkdir(pathname, S_IRWXU | S_IRWXG))
ThrowErrno(std::string(pathname) + ": Can't create directory"); ThrowErrno(std::string(pathname) + ": can't create directory");
return true; return true;
} }
@ -587,7 +587,7 @@ Path::createFile() {
// Create the file // Create the file
int fd = ::creat(path.c_str(), S_IRUSR | S_IWUSR); int fd = ::creat(path.c_str(), S_IRUSR | S_IWUSR);
if (fd < 0) if (fd < 0)
ThrowErrno(path + ": Can't create file"); ThrowErrno(path + ": can't create file");
::close(fd); ::close(fd);
return true; return true;
@ -634,7 +634,7 @@ Path::destroyDirectory(bool remove_contents) const {
else else
pathname[lastchar+1] = 0; pathname[lastchar+1] = 0;
if ( 0 != rmdir(pathname)) if ( 0 != rmdir(pathname))
ThrowErrno(std::string(pathname) + ": Can't destroy directory"); ThrowErrno(std::string(pathname) + ": can't destroy directory");
} }
return true; return true;
} }
@ -643,7 +643,7 @@ bool
Path::destroyFile() const { Path::destroyFile() const {
if (!isFile()) return false; if (!isFile()) return false;
if (0 != unlink(path.c_str())) if (0 != unlink(path.c_str()))
ThrowErrno(path + ": Can't destroy file"); ThrowErrno(path + ": can't destroy file");
return true; return true;
} }
@ -651,8 +651,8 @@ bool
Path::renameFile(const Path& newName) { Path::renameFile(const Path& newName) {
if (!isFile()) return false; if (!isFile()) return false;
if (0 != rename(path.c_str(), newName.c_str())) if (0 != rename(path.c_str(), newName.c_str()))
ThrowErrno(std::string("can't rename ") + path + " as " + ThrowErrno(std::string("can't rename '") + path + "' as '" +
newName.toString()); newName.toString() + "' ");
return true; return true;
} }
@ -676,24 +676,24 @@ sys::CopyFile(const sys::Path &Dest, const sys::Path &Src) {
try { try {
inFile = ::open(Src.c_str(), O_RDONLY); inFile = ::open(Src.c_str(), O_RDONLY);
if (inFile == -1) if (inFile == -1)
ThrowErrno("Cannnot open source file to copy: " + Src.toString()); ThrowErrno(Src.toString() + ": can't open source file to copy: ");
outFile = ::open(Dest.c_str(), O_WRONLY|O_CREAT, 0666); outFile = ::open(Dest.c_str(), O_WRONLY|O_CREAT, 0666);
if (outFile == -1) if (outFile == -1)
ThrowErrno("Cannnot create destination file for copy: " +Dest.toString()); ThrowErrno(Dest.toString() +": can't create destination file for copy: ");
char Buffer[16*1024]; char Buffer[16*1024];
while (ssize_t Amt = ::read(inFile, Buffer, 16*1024)) { while (ssize_t Amt = ::read(inFile, Buffer, 16*1024)) {
if (Amt == -1) { if (Amt == -1) {
if (errno != EINTR && errno != EAGAIN) if (errno != EINTR && errno != EAGAIN)
ThrowErrno("Can't read source file: " + Src.toString()); ThrowErrno(Src.toString()+": can't read source file: ");
} else { } else {
char *BufPtr = Buffer; char *BufPtr = Buffer;
while (Amt) { while (Amt) {
ssize_t AmtWritten = ::write(outFile, BufPtr, Amt); ssize_t AmtWritten = ::write(outFile, BufPtr, Amt);
if (AmtWritten == -1) { if (AmtWritten == -1) {
if (errno != EINTR && errno != EAGAIN) if (errno != EINTR && errno != EAGAIN)
ThrowErrno("Can't write destination file: " + Dest.toString()); ThrowErrno(Dest.toString() + ": can't write destination file: ");
} else { } else {
Amt -= AmtWritten; Amt -= AmtWritten;
BufPtr += AmtWritten; BufPtr += AmtWritten;
@ -726,7 +726,7 @@ Path::makeUnique(bool reuse_current) {
#if defined(HAVE_MKSTEMP) #if defined(HAVE_MKSTEMP)
int TempFD; int TempFD;
if ((TempFD = mkstemp(FNBuffer)) == -1) { if ((TempFD = mkstemp(FNBuffer)) == -1) {
ThrowErrno("Cannot make unique filename for '" + path + "'"); ThrowErrno(path + ": can't make unique filename");
} }
// We don't need to hold the temp file descriptor... we will trust that no one // We don't need to hold the temp file descriptor... we will trust that no one
@ -738,7 +738,7 @@ Path::makeUnique(bool reuse_current) {
#elif defined(HAVE_MKTEMP) #elif defined(HAVE_MKTEMP)
// If we don't have mkstemp, use the old and obsolete mktemp function. // If we don't have mkstemp, use the old and obsolete mktemp function.
if (mktemp(FNBuffer) == 0) { if (mktemp(FNBuffer) == 0) {
ThrowErrno("Cannot make unique filename for '" + path + "'"); ThrowErrno(path + ": can't make unique filename");
} }
// Save the name // Save the name
@ -752,7 +752,7 @@ Path::makeUnique(bool reuse_current) {
path = FNBuffer; path = FNBuffer;
} }
if (FCounter > 999999) if (FCounter > 999999)
throw std::string("Cannot make unique filename for '" + path + "'"); throw std::string(path + ": can't make unique filename: too many files");
#endif #endif
} }