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unicode: constify utf8 data table

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All users already handle the table as const data.
Move the table itself into .rodata to guard against accidental or
malicious modifications.

Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/r/20240809-unicode-const-v1-1-69968a258092@weissschuh.net
Signed-off-by: Gabriel Krisman Bertazi <krisman@suse.de>
This commit is contained in:
Thomas Weißschuh 2024-08-09 17:38:53 +02:00 • committed by Gabriel Krisman Bertazi
parent 17712b7ea0
commit 43bf9d9755
3 changed files with 3 additions and 3 deletions
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2
fs/unicode/mkutf8data.c
View file

@ -3338,7 +3338,7 @@ static void write_file(void)
} }
fprintf(file, "};\n"); fprintf(file, "};\n");
fprintf(file, "\n"); fprintf(file, "\n");
fprintf(file, "struct utf8data_table utf8_data_table = {\n"); fprintf(file, "const struct utf8data_table utf8_data_table = {\n");
fprintf(file, "\t.utf8agetab = utf8agetab,\n"); fprintf(file, "\t.utf8agetab = utf8agetab,\n");
fprintf(file, "\t.utf8agetab_size = ARRAY_SIZE(utf8agetab),\n"); fprintf(file, "\t.utf8agetab_size = ARRAY_SIZE(utf8agetab),\n");
fprintf(file, "\n"); fprintf(file, "\n");

2
fs/unicode/utf8data.c_shipped
View file

@ -4107,7 +4107,7 @@ static const unsigned char utf8data[64256] = {
0x81,0x80,0xcf,0x86,0x85,0x84,0xcf,0x86,0xcf,0x06,0x02,0x00,0x00,0x00,0x00,0x00 0x81,0x80,0xcf,0x86,0x85,0x84,0xcf,0x86,0xcf,0x06,0x02,0x00,0x00,0x00,0x00,0x00
}; };
struct utf8data_table utf8_data_table = { const struct utf8data_table utf8_data_table = {
.utf8agetab = utf8agetab, .utf8agetab = utf8agetab,
.utf8agetab_size = ARRAY_SIZE(utf8agetab), .utf8agetab_size = ARRAY_SIZE(utf8agetab),

2
fs/unicode/utf8n.h
View file

@ -78,6 +78,6 @@ struct utf8data_table {
const unsigned char *utf8data; const unsigned char *utf8data;
}; };
extern struct utf8data_table utf8_data_table; extern const struct utf8data_table utf8_data_table;
#endif /* UTF8NORM_H */ #endif /* UTF8NORM_H */