tree: https://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4.git unicode head: c0ae3a05c89c497446d6e208b68623993b5afc3c commit: 45568caefa60a247ce9ecee3f4a57d1f81f5dd0e [4/10] unicode: implement higher level API for string handling smatch warnings: fs/unicode/utf8-core.c:90 utf8_casefold() warn: impossible condition '(dest[nlen] == -1) => (0-255 == (-1))' fs/unicode/utf8-core.c:112 utf8_normalize() warn: impossible condition '(dest[nlen] == -1) => (0-255 == (-1))' # https://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4.git/commit/?id=45568caefa60a247ce9ecee3f4a57d1f81f5dd0e git remote add ext4 https://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4.git git remote update ext4 git checkout 45568caefa60a247ce9ecee3f4a57d1f81f5dd0e vim +90 fs/unicode/utf8-core.c 45568cae Gabriel Krisman Bertazi 2019-03-18 75 45568cae Gabriel Krisman Bertazi 2019-03-18 76 int utf8_casefold(const struct unicode_map *um, const struct qstr *str, 45568cae Gabriel Krisman Bertazi 2019-03-18 77 unsigned char *dest, size_t dlen) 45568cae Gabriel Krisman Bertazi 2019-03-18 78 { 45568cae Gabriel Krisman Bertazi 2019-03-18 79 const struct utf8data *data = utf8nfdicf(um->version); 45568cae Gabriel Krisman Bertazi 2019-03-18 80 struct utf8cursor cur; 45568cae Gabriel Krisman Bertazi 2019-03-18 81 size_t nlen = 0; 45568cae Gabriel Krisman Bertazi 2019-03-18 82 45568cae Gabriel Krisman Bertazi 2019-03-18 83 if (utf8ncursor(&cur, data, str->name, str->len) < 0) 45568cae Gabriel Krisman Bertazi 2019-03-18 84 return -EINVAL; 45568cae Gabriel Krisman Bertazi 2019-03-18 85 45568cae Gabriel Krisman Bertazi 2019-03-18 86 for (nlen = 0; nlen < dlen; nlen++) { 45568cae Gabriel Krisman Bertazi 2019-03-18 87 dest[nlen] = utf8byte(&cur); 45568cae Gabriel Krisman Bertazi 2019-03-18 88 if (!dest[nlen]) 45568cae Gabriel Krisman Bertazi 2019-03-18 89 return nlen; 45568cae Gabriel Krisman Bertazi 2019-03-18 @90 if (dest[nlen] == -1) ^^^^^^^^^^^^^^^^ 45568cae Gabriel Krisman Bertazi 2019-03-18 91 break; 45568cae Gabriel Krisman Bertazi 2019-03-18 92 } 45568cae Gabriel Krisman Bertazi 2019-03-18 93 return -EINVAL; 45568cae Gabriel Krisman Bertazi 2019-03-18 94 } 45568cae Gabriel Krisman Bertazi 2019-03-18 95 45568cae Gabriel Krisman Bertazi 2019-03-18 96 EXPORT_SYMBOL(utf8_casefold); 45568cae Gabriel Krisman Bertazi 2019-03-18 97 45568cae Gabriel Krisman Bertazi 2019-03-18 98 int utf8_normalize(const struct unicode_map *um, const struct qstr *str, 45568cae Gabriel Krisman Bertazi 2019-03-18 99 unsigned char *dest, size_t dlen) 45568cae Gabriel Krisman Bertazi 2019-03-18 100 { 45568cae Gabriel Krisman Bertazi 2019-03-18 101 const struct utf8data *data = utf8nfdi(um->version); 45568cae Gabriel Krisman Bertazi 2019-03-18 102 struct utf8cursor cur; 45568cae Gabriel Krisman Bertazi 2019-03-18 103 ssize_t nlen = 0; 45568cae Gabriel Krisman Bertazi 2019-03-18 104 45568cae Gabriel Krisman Bertazi 2019-03-18 105 if (utf8ncursor(&cur, data, str->name, str->len) < 0) 45568cae Gabriel Krisman Bertazi 2019-03-18 106 return -EINVAL; 45568cae Gabriel Krisman Bertazi 2019-03-18 107 45568cae Gabriel Krisman Bertazi 2019-03-18 108 for (nlen = 0; nlen < dlen; nlen++) { 45568cae Gabriel Krisman Bertazi 2019-03-18 109 dest[nlen] = utf8byte(&cur); 45568cae Gabriel Krisman Bertazi 2019-03-18 110 if (!dest[nlen]) 45568cae Gabriel Krisman Bertazi 2019-03-18 111 return nlen; 45568cae Gabriel Krisman Bertazi 2019-03-18 @112 if (dest[nlen] == -1) ^^^^^^^^^^^^^^^^ 45568cae Gabriel Krisman Bertazi 2019-03-18 113 break; 45568cae Gabriel Krisman Bertazi 2019-03-18 114 } 45568cae Gabriel Krisman Bertazi 2019-03-18 115 return -EINVAL; 45568cae Gabriel Krisman Bertazi 2019-03-18 116 } 45568cae Gabriel Krisman Bertazi 2019-03-18 117 --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
