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path: root/misc-utils/mtd_debug.c
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2017-11-02Mark or fix switch cases that fall throughDavid Oberhollenzer
Now that C++17 introduced a special fallthrough keyword for explicitly tagging switch cases that are supposed to fall through, newer gcc versions also implement a feature request from 2002 to warn about maybe unwanted fall-throughs in switch cases in other languages (like C). For C code, we can either add a gcc specific attribute at the end of the switch case, or use a special comment that gcc checks for, indicating that the fall-through behaviour is indeed intended. This patch adds a "/* fall-through */" comment at the end of various case blocks to silence gcc warnings and in some cases a break, where fall-through was probably not intended. Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2017-11-02Add no-return attribute to usage() style functionsDavid Oberhollenzer
A common pattern in command line processing is having a usage() function that prints out how to use the command line options and then terminates. The function is typically used inside a switch block for command line options like `-h' or unknown options. In a lot of places, the break keyword is omitted, because the function exits anyway. However, this triggers gcc warnings about implicit fall-through. Rather than adding a phony "/* fall-through */" this patch flags the usage() style function with a gcc attribute, indicating that they do not return and removes further superfluous break statements. Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2017-06-28Eliminate warnings about missing prototypesDavid Oberhollenzer
This patch eliminates warnings generated by the -Wmissing-prototypes option. With this flag set, we are now forced to have prototypes for all global, exported functions, that have to be made visible to the definitions and we are forced to mark all local functions as static. Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2016-08-25mtd-utils: mtd_debug: check amount of data read.Michal Suchanek
The kernel refuses to read more data from a MTD device than the device size. However, mtd_debug does not check the amount of data read as returned by read(2) and assumes the requested amount is always read when there is no error. Reading 8M data from a 4M flash chip results in 8M file containing the flash data at the start. Signed-off-by: Michal Suchanek <hramrach@gmail.com> Signed-off-by: Richard Weinberger <richard@nod.at>
2015-11-11mtd-utils: Restructure the mtd-utils source.Dongsheng Yang
* There is no code modification in this commit, only moving * the files to proper place. The user tools looks a little messy as we place almost the all tools in the root directory of mtd-utils. To make it more clear, I propose to introduce the following structure for our source code. mtd-utils/ |-- lib |-- include |-- misc-utils |-- jffsX-utils |-- nand-utils |-- nor-utils |-- ubi-utils |-- ubifs-utils `-- tests Signed-off-by: Dongsheng Yang <yangds.fnst@cn.fujitsu.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com>