diff options
Diffstat (limited to 'posix/bits/unistd.h')
| -rw-r--r-- | posix/bits/unistd.h | 224 |
1 files changed, 180 insertions, 44 deletions
diff --git a/posix/bits/unistd.h b/posix/bits/unistd.h index 331e8ea3b9..efd7f75a50 100644 --- a/posix/bits/unistd.h +++ b/posix/bits/unistd.h @@ -25,13 +25,23 @@ extern ssize_t __read_chk (int __fd, void *__buf, size_t __nbytes, size_t __buflen) __wur; extern ssize_t __REDIRECT (__read_alias, (int __fd, void *__buf, size_t __nbytes), read) __wur; +extern ssize_t __REDIRECT (__read_chk_warn, + (int __fd, void *__buf, size_t __nbytes, + size_t __buflen), __read_chk) + __wur __warnattr ("read called with bigger length than size of " + "the destination buffer"); __extern_always_inline __wur ssize_t read (int __fd, void *__buf, size_t __nbytes) { - if (__bos0 (__buf) != (size_t) -1 - && (!__builtin_constant_p (__nbytes) || __nbytes > __bos0 (__buf))) - return __read_chk (__fd, __buf, __nbytes, __bos0 (__buf)); + if (__bos0 (__buf) != (size_t) -1) + { + if (!__builtin_constant_p (__nbytes)) + return __read_chk (__fd, __buf, __nbytes, __bos0 (__buf)); + + if (__nbytes > __bos0 (__buf)) + return __read_chk_warn (__fd, __buf, __nbytes, __bos0 (__buf)); + } return __read_alias (__fd, __buf, __nbytes); } @@ -46,23 +56,47 @@ extern ssize_t __REDIRECT (__pread_alias, extern ssize_t __REDIRECT (__pread64_alias, (int __fd, void *__buf, size_t __nbytes, __off64_t __offset), pread64) __wur; +extern ssize_t __REDIRECT (__pread_chk_warn, + (int __fd, void *__buf, size_t __nbytes, + __off_t __offset, size_t __bufsize), __pread_chk) + __wur __warnattr ("pread called with bigger length than size of " + "the destination buffer"); +extern ssize_t __REDIRECT (__pread64_chk_warn, + (int __fd, void *__buf, size_t __nbytes, + __off64_t __offset, size_t __bufsize), + __pread64_chk) + __wur __warnattr ("pread64 called with bigger length than size of " + "the destination buffer"); # ifndef __USE_FILE_OFFSET64 __extern_always_inline __wur ssize_t pread (int __fd, void *__buf, size_t __nbytes, __off_t __offset) { - if (__bos0 (__buf) != (size_t) -1 - && (!__builtin_constant_p (__nbytes) || __nbytes > __bos0 (__buf))) - return __pread_chk (__fd, __buf, __nbytes, __offset, __bos0 (__buf)); + if (__bos0 (__buf) != (size_t) -1) + { + if (!__builtin_constant_p (__nbytes)) + return __pread_chk (__fd, __buf, __nbytes, __offset, __bos0 (__buf)); + + if ( __nbytes > __bos0 (__buf)) + return __pread_chk_warn (__fd, __buf, __nbytes, __offset, + __bos0 (__buf)); + } return __pread_alias (__fd, __buf, __nbytes, __offset); } # else __extern_always_inline __wur ssize_t pread (int __fd, void *__buf, size_t __nbytes, __off64_t __offset) { - if (__bos0 (__buf) != (size_t) -1 - && (!__builtin_constant_p (__nbytes) || __nbytes > __bos0 (__buf))) - return __pread64_chk (__fd, __buf, __nbytes, __offset, __bos0 (__buf)); + if (__bos0 (__buf) != (size_t) -1) + { + if (!__builtin_constant_p (__nbytes)) + return __pread64_chk (__fd, __buf, __nbytes, __offset, __bos0 (__buf)); + + if ( __nbytes > __bos0 (__buf)) + return __pread64_chk_warn (__fd, __buf, __nbytes, __offset, + __bos0 (__buf)); + } + return __pread64_alias (__fd, __buf, __nbytes, __offset); } # endif @@ -71,9 +105,16 @@ pread (int __fd, void *__buf, size_t __nbytes, __off64_t __offset) __extern_always_inline __wur ssize_t pread64 (int __fd, void *__buf, size_t __nbytes, __off64_t __offset) { - if (__bos0 (__buf) != (size_t) -1 - && (!__builtin_constant_p (__nbytes) || __nbytes > __bos0 (__buf))) - return __pread64_chk (__fd, __buf, __nbytes, __offset, __bos0 (__buf)); + if (__bos0 (__buf) != (size_t) -1) + { + if (!__builtin_constant_p (__nbytes)) + return __pread64_chk (__fd, __buf, __nbytes, __offset, __bos0 (__buf)); + + if ( __nbytes > __bos0 (__buf)) + return __pread64_chk_warn (__fd, __buf, __nbytes, __offset, + __bos0 (__buf)); + } + return __pread64_alias (__fd, __buf, __nbytes, __offset); } # endif @@ -88,14 +129,25 @@ extern ssize_t __REDIRECT_NTH (__readlink_alias, (__const char *__restrict __path, char *__restrict __buf, size_t __len), readlink) __nonnull ((1, 2)) __wur; +extern ssize_t __REDIRECT_NTH (__readlink_chk_warn, + (__const char *__restrict __path, + char *__restrict __buf, size_t __len, + size_t __buflen), __readlink_chk) + __nonnull ((1, 2)) __wur __warnattr ("readlink called with bigger length " + "than size of destination buffer"); __extern_always_inline __nonnull ((1, 2)) __wur ssize_t __NTH (readlink (__const char *__restrict __path, char *__restrict __buf, size_t __len)) { - if (__bos (__buf) != (size_t) -1 - && (!__builtin_constant_p (__len) || __len > __bos (__buf))) - return __readlink_chk (__path, __buf, __len, __bos (__buf)); + if (__bos (__buf) != (size_t) -1) + { + if (!__builtin_constant_p (__len)) + return __readlink_chk (__path, __buf, __len, __bos (__buf)); + + if ( __len > __bos (__buf)) + return __readlink_chk_warn (__path, __buf, __len, __bos (__buf)); + } return __readlink_alias (__path, __buf, __len); } #endif @@ -110,14 +162,27 @@ extern ssize_t __REDIRECT_NTH (__readlinkat_alias, char *__restrict __buf, size_t __len), readlinkat) __nonnull ((2, 3)) __wur; +extern ssize_t __REDIRECT_NTH (__readlinkat_chk_warn, + (int __fd, __const char *__restrict __path, + char *__restrict __buf, size_t __len, + size_t __buflen), __readlinkat_chk) + __nonnull ((2, 3)) __wur __warnattr ("readlinkat called with bigger " + "length than size of destination " + "buffer"); __extern_always_inline __nonnull ((2, 3)) __wur ssize_t __NTH (readlinkat (int __fd, __const char *__restrict __path, char *__restrict __buf, size_t __len)) { - if (__bos (__buf) != (size_t) -1 - && (!__builtin_constant_p (__len) || __len > __bos (__buf))) - return __readlinkat_chk (__fd, __path, __buf, __len, __bos (__buf)); + if (__bos (__buf) != (size_t) -1) + { + if (!__builtin_constant_p (__len)) + return __readlinkat_chk (__fd, __path, __buf, __len, __bos (__buf)); + + if (__len > __bos (__buf)) + return __readlinkat_chk_warn (__fd, __path, __buf, __len, + __bos (__buf)); + } return __readlinkat_alias (__fd, __path, __buf, __len); } #endif @@ -126,28 +191,39 @@ extern char *__getcwd_chk (char *__buf, size_t __size, size_t __buflen) __THROW __wur; extern char *__REDIRECT_NTH (__getcwd_alias, (char *__buf, size_t __size), getcwd) __wur; +extern char *__REDIRECT_NTH (__getcwd_chk_warn, + (char *__buf, size_t __size, size_t __buflen), + __getcwd_chk) + __wur __warnattr ("getcwd caller with bigger length than size of " + "destination buffer"); __extern_always_inline __wur char * __NTH (getcwd (char *__buf, size_t __size)) { - if (__bos (__buf) != (size_t) -1 - && (!__builtin_constant_p (__size) || __size > __bos (__buf))) - return __getcwd_chk (__buf, __size, __bos (__buf)); + if (__bos (__buf) != (size_t) -1) + { + if (!__builtin_constant_p (__size)) + return __getcwd_chk (__buf, __size, __bos (__buf)); + + if (__size > __bos (__buf)) + return __getcwd_chk_warn (__buf, __size, __bos (__buf)); + } return __getcwd_alias (__buf, __size); } #if defined __USE_BSD || defined __USE_XOPEN_EXTENDED extern char *__getwd_chk (char *__buf, size_t buflen) __THROW __nonnull ((1)) __wur; -extern char *__REDIRECT_NTH (__getwd_alias, (char *__buf), getwd) - __nonnull ((1)) __wur; +extern char *__REDIRECT_NTH (__getwd_warn, (char *__buf), getwd) + __nonnull ((1)) __wur __warnattr ("please use getcwd instead, as getwd " + "doesn't specify buffer size"); __extern_always_inline __nonnull ((1)) __attribute_deprecated__ __wur char * __NTH (getwd (char *__buf)) { if (__bos (__buf) != (size_t) -1) return __getwd_chk (__buf, __bos (__buf)); - return __getwd_alias (__buf); + return __getwd_warn (__buf); } #endif @@ -155,29 +231,48 @@ extern size_t __confstr_chk (int __name, char *__buf, size_t __len, size_t __buflen) __THROW; extern size_t __REDIRECT_NTH (__confstr_alias, (int __name, char *__buf, size_t __len), confstr); +extern size_t __REDIRECT_NTH (__confstr_chk_warn, + (int __name, char *__buf, size_t __len, + size_t __buflen), __confstr_chk) + __warnattr ("confstr called with bigger length than size of destination " + "buffer"); __extern_always_inline size_t __NTH (confstr (int __name, char *__buf, size_t __len)) { - if (__bos (__buf) != (size_t) -1 - && (!__builtin_constant_p (__len) || __bos (__buf) < __len)) - return __confstr_chk (__name, __buf, __len, __bos (__buf)); + if (__bos (__buf) != (size_t) -1) + { + if (!__builtin_constant_p (__len)) + return __confstr_chk (__name, __buf, __len, __bos (__buf)); + + if (__bos (__buf) < __len) + return __confstr_chk_warn (__name, __buf, __len, __bos (__buf)); + } return __confstr_alias (__name, __buf, __len); } -extern int __getgroups_chk (int __size, __gid_t __list[], size_t listlen) +extern int __getgroups_chk (int __size, __gid_t __list[], size_t __listlen) __THROW __wur; extern int __REDIRECT_NTH (__getgroups_alias, (int __size, __gid_t __list[]), getgroups) __wur; +extern int __REDIRECT_NTH (__getgroups_chk_warn, + (int __size, __gid_t __list[], size_t __listlen), + __getgroups_chk) + __wur __warnattr ("getgroups called with bigger group count than what " + "can fit into destination buffer"); __extern_always_inline int __NTH (getgroups (int __size, __gid_t __list[])) { - if (__bos (__list) != (size_t) -1 - && (!__builtin_constant_p (__size) - || __size * sizeof (__gid_t) > __bos (__list))) - return __getgroups_chk (__size, __list, __bos (__list)); + if (__bos (__list) != (size_t) -1) + { + if (!__builtin_constant_p (__size)) + return __getgroups_chk (__size, __list, __bos (__list)); + + if (__size * sizeof (__gid_t) > __bos (__list)) + return __getgroups_chk_warn (__size, __list, __bos (__list)); + } return __getgroups_alias (__size, __list); } @@ -187,13 +282,23 @@ extern int __ttyname_r_chk (int __fd, char *__buf, size_t __buflen, extern int __REDIRECT_NTH (__ttyname_r_alias, (int __fd, char *__buf, size_t __buflen), ttyname_r) __nonnull ((2)); +extern int __REDIRECT_NTH (__ttyname_r_chk_warn, + (int __fd, char *__buf, size_t __buflen, + size_t __nreal), __ttyname_r_chk) + __nonnull ((2)) __warnattr ("ttyname_r called with bigger buflen than " + "size of destination buffer"); __extern_always_inline int __NTH (ttyname_r (int __fd, char *__buf, size_t __buflen)) { - if (__bos (__buf) != (size_t) -1 - && (!__builtin_constant_p (__buflen) || __buflen > __bos (__buf))) - return __ttyname_r_chk (__fd, __buf, __buflen, __bos (__buf)); + if (__bos (__buf) != (size_t) -1) + { + if (!__builtin_constant_p (__buflen)) + return __ttyname_r_chk (__fd, __buf, __buflen, __bos (__buf)); + + if (__buflen > __bos (__buf)) + return __ttyname_r_chk_warn (__fd, __buf, __buflen, __bos (__buf)); + } return __ttyname_r_alias (__fd, __buf, __buflen); } @@ -203,13 +308,23 @@ extern int __getlogin_r_chk (char *__buf, size_t __buflen, size_t __nreal) __nonnull ((1)); extern int __REDIRECT (__getlogin_r_alias, (char *__buf, size_t __buflen), getlogin_r) __nonnull ((1)); +extern int __REDIRECT (__getlogin_r_chk_warn, + (char *__buf, size_t __buflen, size_t __nreal), + __getlogin_r_chk) + __nonnull ((1)) __warnattr ("getlogin_r called with bigger buflen than " + "size of destination buffer"); __extern_always_inline int getlogin_r (char *__buf, size_t __buflen) { - if (__bos (__buf) != (size_t) -1 - && (!__builtin_constant_p (__buflen) || __buflen > __bos (__buf))) - return __getlogin_r_chk (__buf, __buflen, __bos (__buf)); + if (__bos (__buf) != (size_t) -1) + { + if (!__builtin_constant_p (__buflen)) + return __getlogin_r_chk (__buf, __buflen, __bos (__buf)); + + if (__buflen > __bos (__buf)) + return __getlogin_r_chk_warn (__buf, __buflen, __bos (__buf)); + } return __getlogin_r_alias (__buf, __buflen); } #endif @@ -220,13 +335,23 @@ extern int __gethostname_chk (char *__buf, size_t __buflen, size_t __nreal) __THROW __nonnull ((1)); extern int __REDIRECT_NTH (__gethostname_alias, (char *__buf, size_t __buflen), gethostname) __nonnull ((1)); +extern int __REDIRECT_NTH (__gethostname_chk_warn, + (char *__buf, size_t __buflen, size_t __nreal), + __gethostname_chk) + __nonnull ((1)) __warnattr ("gethostname called with bigger buflen than " + "size of destination buffer"); __extern_always_inline int __NTH (gethostname (char *__buf, size_t __buflen)) { - if (__bos (__buf) != (size_t) -1 - && (!__builtin_constant_p (__buflen) || __buflen > __bos (__buf))) - return __gethostname_chk (__buf, __buflen, __bos (__buf)); + if (__bos (__buf) != (size_t) -1) + { + if (!__builtin_constant_p (__buflen)) + return __gethostname_chk (__buf, __buflen, __bos (__buf)); + + if (__buflen > __bos (__buf)) + return __gethostname_chk_warn (__buf, __buflen, __bos (__buf)); + } return __gethostname_alias (__buf, __buflen); } #endif @@ -238,13 +363,24 @@ extern int __getdomainname_chk (char *__buf, size_t __buflen, size_t __nreal) extern int __REDIRECT_NTH (__getdomainname_alias, (char *__buf, size_t __buflen), getdomainname) __nonnull ((1)) __wur; +extern int __REDIRECT_NTH (__getdomainname_chk_warn, + (char *__buf, size_t __buflen, size_t __nreal), + __getdomainname_chk) + __nonnull ((1)) __wur __warnattr ("getdomainname called with bigger " + "buflen than size of destination " + "buffer"); __extern_always_inline int __NTH (getdomainname (char *__buf, size_t __buflen)) { - if (__bos (__buf) != (size_t) -1 - && (!__builtin_constant_p (__buflen) || __buflen > __bos (__buf))) - return __getdomainname_chk (__buf, __buflen, __bos (__buf)); + if (__bos (__buf) != (size_t) -1) + { + if (!__builtin_constant_p (__buflen)) + return __getdomainname_chk (__buf, __buflen, __bos (__buf)); + + if (__buflen > __bos (__buf)) + return __getdomainname_chk_warn (__buf, __buflen, __bos (__buf)); + } return __getdomainname_alias (__buf, __buflen); } #endif |