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return more useful error messages by using strerror to format errno

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instead of returning an ambiguous reason.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90275 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2009-12-01 22:51:41 +00:00
parent 0e97e799d7
commit 6e1f16d522
1 changed files with 3 additions and 3 deletions
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6
lib/Support/MemoryBuffer.cpp
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@ -176,7 +176,7 @@ MemoryBuffer *MemoryBuffer::getFile(StringRef Filename, std::string *ErrStr,
#endif #endif
int FD = ::open(Filename.str().c_str(), O_RDONLY|OpenFlags); int FD = ::open(Filename.str().c_str(), O_RDONLY|OpenFlags);
if (FD == -1) { if (FD == -1) {
if (ErrStr) *ErrStr = "could not open file"; if (ErrStr) *ErrStr = strerror(errno);
return 0; return 0;
} }
@ -186,7 +186,7 @@ MemoryBuffer *MemoryBuffer::getFile(StringRef Filename, std::string *ErrStr,
struct stat FileInfo; struct stat FileInfo;
// TODO: This should use fstat64 when available. // TODO: This should use fstat64 when available.
if (fstat(FD, &FileInfo) == -1) { if (fstat(FD, &FileInfo) == -1) {
if (ErrStr) *ErrStr = "could not get file length"; if (ErrStr) *ErrStr = strerror(errno);
::close(FD); ::close(FD);
return 0; return 0;
} }
@ -230,8 +230,8 @@ MemoryBuffer *MemoryBuffer::getFile(StringRef Filename, std::string *ErrStr,
// try again // try again
} else { } else {
// error reading. // error reading.
if (ErrStr) *ErrStr = strerror(errno);
close(FD); close(FD);
if (ErrStr) *ErrStr = "error reading file data";
return 0; return 0;
} }
} }