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Add basic support for ReFS

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It works until the inode are 64 bit. Then it fails.
This commit is contained in:
Andrea Mazzoleni 2016-10-05 08:11:44 +02:00
parent 5f2f0a9fcd
commit 97c01d35f4
1 changed files with 41 additions and 21 deletions
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62
cmdline/mingw.c
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@ -37,6 +37,9 @@ int exit_sync_needed = 2;
#define WIN32_ES_AWAYMODE_REQUIRED 0x00000040L
#define WIN32_ES_CONTINUOUS 0x80000000L
/* File Index */
#define FILE_INVALID_FILE_ID ((ULONGLONG)-1LL)
/**
* Direct access to RtlGenRandom().
* This function is accessible only with LoadLibrary() and it's available from Windows XP.
@ -447,7 +450,7 @@ static void windows_attr2stat(DWORD FileAttributes, DWORD ReparseTag, struct win
/**
* Convert Windows info to the Unix stat format.
*/
static void windows_info2stat(const BY_HANDLE_FILE_INFORMATION* info, const FILE_ATTRIBUTE_TAG_INFO* tag, struct windows_stat* st)
static int windows_info2stat(const BY_HANDLE_FILE_INFORMATION* info, const FILE_ATTRIBUTE_TAG_INFO* tag, struct windows_stat* st)
{
uint64_t mtime;
@ -479,12 +482,30 @@ static void windows_info2stat(const BY_HANDLE_FILE_INFORMATION* info, const FILE
/* GetFileInformationByHandle() ensures to return synced information */
st->st_sync = 1;
/**
* In ReFS the IDs are 128 bit, and the 64 bit interface may fail.
*
* From Microsoft "Application Compatibility with ReFS"
* http://download.microsoft.com/download/C/B/3/CB3561DC-6BF6-443D-B5B9-9676ACDF7F75/Application%20Compatibility%20with%20ReFS.docx
* "64-bit file identifier can be obtained from GetFileInformationByHandle in"
* "the nFileIndexHigh and nFileIndexLow members. This API is an extended version"
* "that includes 128-bit file identifiers. If GetFileInformationByHandle returns"
* "FILE_INVALID_FILE_ID, the identifier may only be described in 128 bit form."
*/
if (st->st_ino == FILE_INVALID_FILE_ID) {
log_fatal("Invalid inode number! Is this ReFS?\n");
errno = EINVAL;
return -1;
}
return 0;
}
/**
* Convert Windows info to the Unix stat format.
*/
static void windows_stream2stat(const BY_HANDLE_FILE_INFORMATION* info, const FILE_ID_BOTH_DIR_INFO* stream, struct windows_stat* st)
static int windows_stream2stat(const BY_HANDLE_FILE_INFORMATION* info, const FILE_ID_BOTH_DIR_INFO* stream, struct windows_stat* st)
{
uint64_t mtime;
@ -513,6 +534,15 @@ static void windows_stream2stat(const BY_HANDLE_FILE_INFORMATION* info, const FI
/* directory listing doesn't ensure to return synced information */
st->st_sync = 0;
/* in ReFS the IDs are 128 bit, and the 64 bit interface may fail */
if (st->st_ino == FILE_INVALID_FILE_ID) {
log_fatal("Invalid inode number! Is this ReFS?\n");
errno = EINVAL;
return -1;
}
return 0;
}
/**
@ -571,7 +601,7 @@ static void windows_finddata2dirent(const WIN32_FIND_DATAW* info, struct windows
windows_finddata2stat(info, &dirent->d_stat);
}
static void windows_stream2dirent(const BY_HANDLE_FILE_INFORMATION* info, const FILE_ID_BOTH_DIR_INFO* stream, struct windows_dirent* dirent)
static int windows_stream2dirent(const BY_HANDLE_FILE_INFORMATION* info, const FILE_ID_BOTH_DIR_INFO* stream, struct windows_dirent* dirent)
{
char conv_buf[CONV_MAX];
const char* name;
@ -587,7 +617,7 @@ static void windows_stream2dirent(const BY_HANDLE_FILE_INFORMATION* info, const
memcpy(dirent->d_name, name, len);
dirent->d_name[len] = 0;
windows_stream2stat(info, stream, &dirent->d_stat);
return windows_stream2stat(info, stream, &dirent->d_stat);
}
/**
@ -662,9 +692,7 @@ int windows_fstat(int fd, struct windows_stat* st)
return -1;
}
windows_info2stat(&info, &tag, st);
return 0;
return windows_info2stat(&info, &tag, st);
}
int windows_lstat(const char* file, struct windows_stat* st)
@ -821,9 +849,7 @@ int lstat_sync(const char* file, struct windows_stat* st, uint64_t* physical)
return -1;
}
windows_info2stat(&info, &tag, st);
return 0;
return windows_info2stat(&info, &tag, st);
}
int windows_stat(const char* file, struct windows_stat* st)
@ -863,9 +889,7 @@ int windows_stat(const char* file, struct windows_stat* st)
return -1;
}
windows_info2stat(&info, &tag, st);
return 0;
return windows_info2stat(&info, &tag, st);
}
int windows_ftruncate(int fd, off64_t off)
@ -1259,12 +1283,10 @@ static int windows_first_stream(windows_dir* dirstream)
}
/* get the first entry */
dirstream->state = DIR_STATE_FILLED;
dirstream->buffer_pos = 0;
fd = (FILE_ID_BOTH_DIR_INFO*)dirstream->buffer;
windows_stream2dirent(&dirstream->info, fd, &dirstream->entry);
dirstream->state = DIR_STATE_FILLED;
return 0;
return windows_stream2dirent(&dirstream->info, fd, &dirstream->entry);
}
static int windows_next_stream(windows_dir* dirstream)
@ -1283,12 +1305,10 @@ static int windows_next_stream(windows_dir* dirstream)
}
/* go to the next one */
dirstream->state = DIR_STATE_FILLED;
dirstream->buffer_pos += fd->NextEntryOffset;
fd = (FILE_ID_BOTH_DIR_INFO*)(dirstream->buffer + dirstream->buffer_pos);
windows_stream2dirent(&dirstream->info, fd, &dirstream->entry);
dirstream->state = DIR_STATE_FILLED;
return 0;
return windows_stream2dirent(&dirstream->info, fd, &dirstream->entry);
}
static windows_dir* windows_opendir_stream(const char* dir)