OK, figured it out... VERY INTERESTING.
The original file has an mtime of -2082826800 which corresponds to 5AM
Friday, Jan 1, 1904.
The the error message in question is actually *right* and not an
error:
setVarInt botch: got negative argument -2082826800; setting to 0
i.e. it truly is a negative mtime.
The reason for this odd time is that the file was created on a Mac128
(circa 1985) and apparently, on old Macs (pre-PowerPC), time starts with
midnight Jan
1, 1904 and runs until 2040. Now 5AM GMT is actually 12AM EST (my home
timezone), so the file shows a 'default' old Mac start date of
midnight Jan 1, 1904.
Now for the interesting part.
Both the v3 and v4 versions of BackupPC_attribPrint are actually wrong! 2
(different) bugs!!!!
1. v3 displays a positive mtime of 2212140496 which is is right only
in the sense that it is the decimal equivalent of the 2's
complement representation of -2082826800
2. v4 properly catches that the mtime is negative, but signals an
error rather than writing it. it then proceeds however to record a
wrong (and very large) mtime of 18446744071626724816, rather than
0. The number however is 2^64 which is the 2's complement of 0 for
8 byte integers
Fascinating. I learned a lot from nailing this one down.
Now both the v3 and v4 bugs should presumably be corrected :)
"" wrote at about 20:23:18 -0400 on Monday, April 8, 2019:
> "" wrote at about 20:13:33 -0400 on Monday, April 8, 2019:
>
> Once again seems to be a problem with bpc_attrib.c:
> BackupPC_attribPrint
>
> Using v3:
> 'MacWrite 5.0Scrap' => {
> 'uid' => 501,
> 'mode' => 33188,
> 'sizeDiv4GB' => 0,
> 'size' => 0,
> 'type' => 0,
> 'gid' => 501,
> 'sizeMod4GB' => 0,
> 'mtime' => 2212140496
> },
>
> Using v4:
>
> 'MacWrite 5.0Scrap' => {
> 'compress' => 3,
> 'digest' => '',
> 'gid' => 501,
> 'inode' => 0,
> 'mode' => 33188,
> 'mtime' => '18446744071626724816',
> 'name' => 'MacWrite 5.0Scrap',
> 'nlinks' => 0,
> 'size' => 0,
> 'type' => 0,
> 'uid' => 501
> },
>
> Clearly, v4 is messing up on reading 'mtime' which presumably is what
> is causing the problem, consistent with the verbose output of
> BackupPC_migrateV3toV4 (as more fully excertped below)
>
> > setVarInt botch: got negative argument -2082826800; setting to 0
> > Wrote file MacWrite 5.0Scrap: type = 0, mode = 0100644, uid/gid =
> 501/501, size = 0, inode = 11616435, nlinks = 0, digest = 0xd41d8c...,
> bufUsed = 925
>
>
>
> >
> > Craig Barratt wrote at about 23:39:50 -0700 on Sunday, April 7, 2019:
> > > Jeff,
> > >
> > > Please send me an attrib file that triggers that error.
> > >
> > > Craig
> > >
> >
> > Here is the relevant verbose output from BackupPc_migrateV3toV4
> > starting with the attrib file:
> >
> > bpc_poolRefDeltaUpdate(5a3631521955e47e179ea20d8a84ac5a, 1), count now 1
> >
> bpc_attrib_dirWrite(/var/lib/backuppc/pc/consult/13.v4/./f%2f/fvar/fopt/fexecutor/fshare/fhome/fSystem
> Folder/attrib): dirPath =
> /var/lib/backuppc/pc/consult/13.v4/./f%2f/fvar/fopt/fexecutor/fshare/fhome/fSystem
> Folder, attribFileName = attrib, baseAttribFileName = attrib
> >
> bpc_path_create(/var/lib/backuppc/pc/consult/13.v4/./f%2f/fvar/fopt/fexecutor/fshare/fhome/fSystem
> Folder)
> > Wrote file Extensions: type = 5, mode = 040771, uid/gid = 0/1002, size =
> 4096, inode = 11616442, nlinks = 0, digest = 0x000000..., bufUsed = 4
> > Wrote file %mac.rsrc: type = 0, mode = 0100660, uid/gid = 0/1002, size =
> 6753, inode = 11616437, nlinks = 0, digest = 0xc874b4..., bufUsed = 37
> > Wrote file system.ard: type = 0, mode = 0100660, uid/gid = 0/1002, size =
> 0, inode = 11616455, nlinks = 0, digest = 0xd41d8c..., bufUsed = 85
> > Wrote file %MacWrite 5.0Scrap: type = 0, mode = 0100644, uid/gid =
> 501/501, size = 198, inode = 11616432, nlinks = 0, digest = 0x85e52a...,
> bufUsed = 133
> > Wrote file Excel Toolbars: type = 0, mode = 0100644, uid/gid = 501/501,
> size = 267, inode = 11616447, nlinks = 0, digest = 0x619077..., bufUsed = 191
> > Wrote file %ParamRAM: type = 0, mode = 0100660, uid/gid = 0/1002, size =
> 198, inode = 11616457, nlinks = 0, digest = 0x5a3631..., bufUsed = 245
> > Wrote file Printer: type = 0, mode = 0100640, uid/gid = 0/1002, size = 0,
> inode = 11616441, nlinks = 0, digest = 0xd41d8c..., bufUsed = 293
> > Wrote file %system.ard: type = 0, mode = 0100660, uid/gid = 0/1002, size
> = 798, inode = 11616445, nlinks = 0, digest = 0xdcd6d0..., bufUsed = 338
> > Wrote file %System: type = 0, mode = 0100660, uid/gid = 0/1002, size =
> 487415, inode = 11616434, nlinks = 0, digest = 0xa9c2a3..., bufUsed = 388
> > Wrote file System: type = 0, mode = 0100660, uid/gid = 0/1002, size = 0,
> inode = 11616433, nlinks = 0, digest = 0xd41d8c..., bufUsed = 435
> > Wrote file Browser: type = 0, mode = 0100640, uid/gid = 0/1002, size = 0,
> inode = 11616450, nlinks = 0, digest = 0xd41d8c..., bufUsed = 479
> > Wrote file ParamRAM: type = 0, mode = 0100660, uid/gid = 0/1002, size =
> 20, inode = 11616443, nlinks = 0, digest = 0xcef2a5..., bufUsed = 524
> > Wrote file %Printer: type = 0, mode = 0100640, uid/gid = 0/1002, size =
> 2279, inode = 11616438, nlinks = 0, digest = 0x07c53e..., bufUsed = 570
> > Wrote file %Browser: type = 0, mode = 0100640, uid/gid = 0/1002, size =
> 119268, inode = 11616448, nlinks = 0, digest = 0x9fb0e6..., bufUsed = 617
> > Wrote file %windows.rsrc: type = 0, mode = 0100660, uid/gid = 0/1002,
> size = 15917, inode = 11616451, nlinks = 0, digest = 0xd30945..., bufUsed =
> 665
> > Wrote file %Excel Toolbars: type = 0, mode = 0100644, uid/gid = 501/501,
> size = 198, inode = 11616439, nlinks = 0, digest = 0x7c1511..., bufUsed = 717
> > Wrote file windows.rsrc: type = 0, mode = 0100660, uid/gid = 0/1002, size
> = 0, inode = 11616453, nlinks = 0, digest = 0xd41d8c..., bufUsed = 772
> > Wrote file mac.rsrc: type = 0, mode = 0100660, uid/gid = 0/1002, size =
> 0, inode = 11616440, nlinks = 0, digest = 0xd41d8c..., bufUsed = 822
> > Wrote file Excel Settings (4): type = 0, mode = 0100644, uid/gid =
> 501/501, size = 0, inode = 11616436, nlinks = 0, digest = 0xd41d8c...,
> bufUsed = 868
> > setVarInt botch: got negative argument -2082826800; setting to 0
> > Wrote file MacWrite 5.0Scrap: type = 0, mode = 0100644, uid/gid =
> 501/501, size = 0, inode = 11616435, nlinks = 0, digest = 0xd41d8c...,
> bufUsed = 925
> > Wrote file %godata.sav: type = 0, mode = 0100644, uid/gid = 501/501, size
> = 198, inode = 11616452, nlinks = 0, digest = 0x39c291..., bufUsed = 977
> > Wrote file %Preferences: type = 0, mode = 0100660, uid/gid = 0/1002, size
> = 198, inode = 11616454, nlinks = 0, digest = 0x087760..., bufUsed = 1028
> > Wrote file godata.sav: type = 0, mode = 0100644, uid/gid = 501/501, size
> = 1100, inode = 11616456, nlinks = 0, digest = 0xb247c3..., bufUsed = 1079
> > Wrote file MacWrite 5.0Undo: type = 0, mode = 0100644, uid/gid = 501/501,
> size = 32, inode = 11616446, nlinks = 0, digest = 0x70bc8f..., bufUsed = 1129
> > Wrote file %MacWrite 5.0Undo: type = 0, mode = 0100644, uid/gid =
> 501/501, size = 198, inode = 11616449, nlinks = 0, digest = 0xb5c763...,
> bufUsed = 1184
> > Wrote file Preferences: type = 5, mode = 040771, uid/gid = 0/1002, size =
> 4096, inode = 11616431, nlinks = 0, digest = 0x000000..., bufUsed = 1241
> >
> >
> > I am also attaching the relevant attrib file
> > [DELETED ATTACHMENT attrib, Untyped binary data]
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