@@ -50,7 +50,6 @@ static inline int printk(const char *fmt, ...)
#endif
extern int in_aton(char *str);
-extern size_t strlcpy(char *, const char *, size_t);
extern size_t strlcat(char *, const char *, size_t);
extern size_t strscpy(char *, const char *, size_t);
@@ -40,7 +40,7 @@ static int __init make_uml_dir(void)
__func__);
goto err;
}
- strlcpy(dir, home, sizeof(dir));
+ strscpy(dir, home, sizeof(dir));
uml_dir++;
}
strlcat(dir, uml_dir, sizeof(dir));
@@ -243,7 +243,7 @@ int __init set_umid(char *name)
if (strlen(name) > UMID_LEN - 1)
return -E2BIG;
- strlcpy(umid, name, sizeof(umid));
+ strscpy(umid, name, sizeof(umid));
return 0;
}
@@ -262,7 +262,7 @@ static int __init make_umid(void)
make_uml_dir();
if (*umid == '\0') {
- strlcpy(tmp, uml_dir, sizeof(tmp));
+ strscpy(tmp, uml_dir, sizeof(tmp));
strlcat(tmp, "XXXXXX", sizeof(tmp));
fd = mkstemp(tmp);
if (fd < 0) {
strlcpy() reads the entire source buffer first. This read may exceed the destination size limit. This is both inefficient and can lead to linear read overflows if a source string is not NUL-terminated [1]. In an effort to remove strlcpy() completely [2], replace strlcpy() here with strscpy(). No return values were used, so direct replacement is safe. [1] https://www.kernel.org/doc/html/latest/process/deprecated.html#strlcpy [2] https://github.com/KSPP/linux/issues/89 Signed-off-by: Azeem Shaikh <azeemshaikh38@gmail.com> --- arch/um/include/shared/user.h | 1 - arch/um/os-Linux/umid.c | 6 +++--- 2 files changed, 3 insertions(+), 4 deletions(-)