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libsmb: Define to transfer file types via smb3 unix extensions

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Ride on the definitions of the SMB1 extensions, send the UNIX type in the 3
bits above the permissions and extra (suid,sgid,sticky) bits

Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
This commit is contained in:
Volker Lendecke 2024-09-20 22:58:03 +02:00 committed by Ralph Boehme
parent 03fe0d631d
commit a9983bb6ed
3 changed files with 18 additions and 1 deletions
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4
libcli/smb/smb_unix_ext.h
View File

@ -117,7 +117,9 @@ Offset Size Name
#define UNIX_USR_MASK 0000700
#define UNIX_PERM_MASK 0000777
#define UNIX_EXTRA_MASK 0007000
#define UNIX_ALL_MASK 0007777
#define UNIX_FILETYPE_MASK 0070000
#define UNIX_FILETYPE_SHIFT 12
#define UNIX_ALL_MASK 0077777
/* Flags for chflags (CIFS_UNIX_EXTATTR_CAP capability) and
* SMB_QUERY_FILE_UNIX_INFO2.

2
libcli/smb/smb_util.h
View File

@ -34,6 +34,8 @@ uint32_t unix_perms_to_wire(mode_t perms);
mode_t wire_perms_to_unix(uint32_t perms);
mode_t wire_filetype_to_unix(uint32_t wire_type);
uint32_t unix_filetype_to_wire(mode_t mode);
mode_t wire_mode_to_unix(uint32_t wire);
uint32_t unix_mode_to_wire(mode_t mode);
bool smb_buffer_oob(uint32_t bufsize, uint32_t offset, uint32_t length);

13
libcli/smb/util.c
View File

@ -195,6 +195,19 @@ uint32_t unix_filetype_to_wire(mode_t mode)
return UNIX_TYPE_UNKNOWN;
}
mode_t wire_mode_to_unix(uint32_t wire)
{
uint32_t wire_type = (wire & UNIX_FILETYPE_MASK) >>
UNIX_FILETYPE_SHIFT;
return wire_perms_to_unix(wire) | wire_filetype_to_unix(wire_type);
}
uint32_t unix_mode_to_wire(mode_t mode)
{
uint32_t wire_type = unix_filetype_to_wire(mode);
return unix_perms_to_wire(mode) | (wire_type << UNIX_FILETYPE_SHIFT);
}
bool smb_buffer_oob(uint32_t bufsize, uint32_t offset, uint32_t length)
{
if ((offset + length < offset) || (offset + length < length)) {