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Merge "init: Add tests and document the new fnmatch behavior in ExternalFirmwareHandler."

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David Anderson 2021-05-05 00:21:34 +00:00 committed by Gerrit Code Review
parent 1c65d40154 19872d0156
commit 6939583deb
2 changed files with 21 additions and 0 deletions
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4
init/README.ueventd.md
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@ -130,6 +130,10 @@ For example
Will launch `/vendor/bin/led_coeffs.bin` as the system user instead of serving the default firmware Will launch `/vendor/bin/led_coeffs.bin` as the system user instead of serving the default firmware
for `/devices/leds/red/firmware/coeffs.bin`. for `/devices/leds/red/firmware/coeffs.bin`.
The `devpath` argument may include asterisks (`*`) to match multiple paths. For example, the string
`/dev/*/red` will match `/dev/leds/red` as well as `/dev/lights/red`. The pattern matching follows
the rules of the fnmatch() function.
Ueventd will provide the uevent `DEVPATH` and `FIRMWARE` to this external program on the environment Ueventd will provide the uevent `DEVPATH` and `FIRMWARE` to this external program on the environment
via environment variables with the same names. Ueventd will use the string written to stdout as the via environment variables with the same names. Ueventd will use the string written to stdout as the
new name of the firmware to load. It will still look for the new firmware in the list of firmware new name of the firmware to load. It will still look for the new firmware in the list of firmware

17
init/firmware_handler_test.cpp
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@ -103,6 +103,23 @@ int HandleBadPath(int argc, char** argv) {
return 0; return 0;
} }
TEST(firmware_handler, Matching) {
ExternalFirmwareHandler h("/dev/path/a.bin", getuid(), "/test");
ASSERT_TRUE(h.match("/dev/path/a.bin"));
ASSERT_FALSE(h.match("/dev/path/a.bi"));
h = ExternalFirmwareHandler("/dev/path/a.*", getuid(), "/test");
ASSERT_TRUE(h.match("/dev/path/a.bin"));
ASSERT_TRUE(h.match("/dev/path/a.bix"));
ASSERT_FALSE(h.match("/dev/path/b.bin"));
h = ExternalFirmwareHandler("/dev/*/a.bin", getuid(), "/test");
ASSERT_TRUE(h.match("/dev/path/a.bin"));
ASSERT_TRUE(h.match("/dev/other/a.bin"));
ASSERT_FALSE(h.match("/dev/other/c.bin"));
ASSERT_FALSE(h.match("/dev/path/b.bin"));
}
} // namespace init } // namespace init
} // namespace android } // namespace android