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add much better error checking on libarchive calls.

This commit is contained in:
Bill Hoffman 2009-11-07 19:35:35 -05:00
parent a73acfbeb9
commit 3d1afdee4a
1 changed files with 44 additions and 22 deletions
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66
Source/cmSystemTools.cxx
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@ -1706,7 +1706,18 @@ bool cmSystemTools::CreateTar(const char* outFileName,
const std::vector<cmStdString>& files,
bool gzip, bool bzip2, bool verbose)
{
#if defined(CMAKE_BUILD_WITH_CMAKE)
#if defined(CMAKE_BUILD_WITH_CMAKE)
// Create a macro to handle return from libarchive
// functions
#define CHECK_ARCHIVE_ERROR(res, msg)\
if(res != ARCHIVE_OK)\
{\
cmSystemTools::Error(msg, \
archive_error_string(a));\
return false;\
}
std::string cwd = cmSystemTools::GetCurrentWorkingDirectory();
// recursively expand all directories in files so that we have a list
// of files
@ -1747,28 +1758,31 @@ bool cmSystemTools::CreateTar(const char* outFileName,
int res;
// create a new archive
struct archive* a = archive_write_new();
if(!a)
{
cmSystemTools::Error("Unable to use create archive");
return false;
}
if(gzip)
{
res = archive_write_set_compression_gzip(a);
if(res != ARCHIVE_OK)
{
cmSystemTools::Error("Unable to use gzip in libarchive");
}
res = archive_write_set_compression_gzip(a);
CHECK_ARCHIVE_ERROR(res, "Can not set gzip:");
}
if(bzip2)
{
res = archive_write_set_compression_bzip2(a);
if(res != ARCHIVE_OK)
{
cmSystemTools::Error("Unable to use bzip2 in libarchive");
}
}
res = archive_write_set_format_ustar(a);
if(res != ARCHIVE_OK)
{
cmSystemTools::Error("Unable to use tar libarchive");
CHECK_ARCHIVE_ERROR(res, "Can not set bzip2:");
}
archive_write_open_file(a, outFileName);
if(!bzip2 && !gzip)
{
res = archive_write_set_compression_none(a);
CHECK_ARCHIVE_ERROR(res, "Can not set none:");
}
res = archive_write_set_format_ustar(a);
CHECK_ARCHIVE_ERROR(res, "Can not set tar format:");
res = archive_write_open_file(a, outFileName);
CHECK_ARCHIVE_ERROR(res, "write open:");
// create a new disk struct
struct archive* disk = archive_read_disk_new();
archive_read_disk_set_standard_lookup(disk);
@ -1787,12 +1801,13 @@ bool cmSystemTools::CreateTar(const char* outFileName,
}
// Set the name of the entry to the file name
archive_entry_set_pathname(entry, rp.c_str());
// get the information about the file from stat
struct stat s;
stat(fileIt->c_str(), &s);
archive_read_disk_entry_from_file(disk, entry, -1, &s);
res = archive_read_disk_entry_from_file(disk, entry, -1, 0);
CHECK_ARCHIVE_ERROR(res, "read disk entry:");
// write entry header
archive_write_header(a, entry);
res = archive_write_header(a, entry);
CHECK_ARCHIVE_ERROR(res, "write header: ");
// now copy contents of file into archive a
FILE* file = fopen(fileIt->c_str(), "rb");
if(!file)
@ -1805,7 +1820,14 @@ bool cmSystemTools::CreateTar(const char* outFileName,
int len = fread(buff, 1, sizeof(buff), file);
while (len > 0)
{
archive_write_data(a, buff, len);
int wlen = archive_write_data(a, buff, len);
if(wlen != len)
{
cmSystemTools::Error("Problem with archive_write_data:",
archive_error_string(a)
);
return false;
}
len = fread(buff, 1, sizeof(buff), file);
}
// close the file and free the entry