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Add time to filesystem API (#6544)

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* Add time to filesystem API

Support the ESP32 File::getLastWrite() call and setting the time on
all filesystems automatically (assuming the system clock has
been set properly and time(NULL) returns the proper time!).

Adds Dir::fileTime() to get the time of a file being listed, similar to
Dir::fileName() and Dir::fileSize().

Adds ::setTimeCallback(time_t (*cb)()) to File, Dir, and FS, allowing
users to override the default timestamp on a per-file, directory, or
filesystem basis. By default, a simple callback returning time(nullptr)
is implemented.

LittleFS uses the 't' attribute and should be backwards compatible.

SD/SDFS work and include wrappers for obsolete SdFat timestamp callbacks
using the MSDOS time.

This PR does not update SPIFFS, due to compatability concerns and a
possible massive rewrite which would make it possible to determine if an
old-style ot metadata enabled FS is present at mount time.

Includes an updated SD/listfiles and LittleFS_time example.

Replaces #6315

* Add links to new mklittlefs w/timestamp support

Include the update mklittlefs which generated 't' metadata on imported
files.
	../tools/sdk/lwip2/include/netif/lowpan6_opts.h

* Add explicit note about timestamp being local time

* Address review concerns

Clean up some awkward object instantiations.

Remove the _enableTime flag/setter from SPIFFS.

Clean up the FSConfig constructors using C++ style init lists.
This commit is contained in:
Earle F. Philhower, III
2019-10-31 06:09:52 -07:00
committed by david gauchard
parent b4c28e74d6
commit 72dd589599
12 changed files with 576 additions and 114 deletions
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61
package/package_esp8266com_index.template.json
View File

@ -121,7 +121,7 @@
},
{
"packager": "esp8266",
"version": "2.5.0-4-b40a506",
"version": "2.5.0-4-69bd9e6",
"name": "mklittlefs"
},
{
@ -302,61 +302,54 @@
]
},
{
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"version": "2.5.0-4-69bd9e6",
"name": "mklittlefs",
"systems": [
{
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"archiveFileName": "aarch64-linux-gnu.mklittlefs-7f77f2b.1563313032.tar.gz",
"checksum": "SHA-256:25c4dcf818d175e19c3cc22bc0388c61fa3d9bdf82a1fad388323cef34caa169",
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"archiveFileName": "x86_64-apple-darwin14.mklittlefs-7f77f2b.1563313032.tar.gz",
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]
}
]
}
}