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Add ttyname_r() check

This commit is contained in:
sin 2015-02-28 15:30:25 +00:00
parent 2f0e3f574f
commit 33d2ff5aa8
1 changed files with 13 additions and 0 deletions
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13
include/unistd.h
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@ -95,6 +95,17 @@ __fortify_read(int fd, void *buf, size_t n)
return read(fd, buf, n);
}
static inline __attribute__ ((always_inline))
int
__fortify_ttyname_r(int fd, char *name, size_t n)
{
size_t bos = __builtin_object_size(name, 0);
if (n > bos)
__builtin_trap();
return ttyname_r(fd, name, n);
}
static inline __attribute__ ((always_inline))
ssize_t
__fortify_write(int fd, const void *buf, size_t n)
@ -126,6 +137,8 @@ __fortify_write(int fd, const void *buf, size_t n)
#define pread(fd, buf, n, offset) __fortify_pread(fd, buf, n, offset)
#undef read
#define read(fd, buf, n) __fortify_read(fd, buf, n)
#undef ttyname_r
#define ttyname_r(fd, name, n) __fortify_ttyname_r(fd, name, n)
#undef write
#define write(fd, buf, n) __fortify_write(fd, buf, n)