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7c8f5662c5
One problem of grab_file() is that it cannot distinguish the following two cases: - It cannot read the file (the file does not exist, or read permission is not set) - It can read the file, but the file size is zero This is because grab_file() calls mmap(), which requires the mapped length is greater than 0. Hence, grab_file() fails for both cases. If an empty header file were included for checksum calculation, the following warning would be printed: WARNING: modpost: could not open ...: Invalid argument An empty file is a valid source file, so it should not fail. Use read_text_file() instead. It can read a zero-length file. Then, parse_file() will succeed with doing nothing. Going forward, the first case (it cannot read the file) is a fatal error. If the source file from which an object was compiled is missing, something went wrong. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> |
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| .. | ||
| .gitignore | ||
| devicetable-offsets.c | ||
| empty.c | ||
| file2alias.c | ||
| Makefile | ||
| mk_elfconfig.c | ||
| modpost.c | ||
| modpost.h | ||
| sumversion.c | ||