search for: memchr

- memchr() needs to increment pointer or it's just a busy loop (unless c matches the first character in s) - add memrchr.c --- klibc-0.194/klibc/memchr.c.orig 2005-01-06 23:08:33.703355840 -0700 +++ klibc-0.194/klibc/memchr.c 2005-01-06 23:04:26.436946048 -0700 @@ -12,6 +12,7 @@ while ( n-- ) {...

This series introduces a new generic function strtolower(), which converts strings to lowercase in-place, overwriting the original string. This kind of functionality is needed in several places in the kernel. Right now, everybody seems to be implementing their own copy of this function. So, we replace several custom "strtolower" implementations with this new library function. Another

...t; lib/string.c | 14 ++++++++++++++ > 2 files changed, 15 insertions(+) > > diff --git a/include/linux/string.h b/include/linux/string.h > index 26b6f6a..aad605e 100644 > --- a/include/linux/string.h > +++ b/include/linux/string.h > @@ -116,6 +116,7 @@ extern void * memchr(const void *,int,__kernel_size_t); > #endif > void *memchr_inv(const void *s, int c, size_t n); > char *strreplace(char *s, char old, char new); > +char *strtolower(char *s); > > extern void kfree_const(const void *x); > > diff --git a/lib/string.c b/lib/string.c &gt...

...sr/klibc/mempcpy.c | 7 +++++++ 3 files changed, 9 insertions(+), 1 deletions(-) create mode 100644 usr/klibc/mempcpy.c diff --git a/usr/include/string.h b/usr/include/string.h index 0c8c046..270fddd 100644 --- a/usr/include/string.h +++ b/usr/include/string.h @@ -13,6 +13,7 @@ __extern void *memchr(const void *, int, size_t); __extern void *memrchr(const void *, int, size_t); __extern int memcmp(const void *, const void *, size_t); __extern void *memcpy(void *, const void *, size_t); +__extern void *mempcpy(void *, const void *, size_t); __extern void *memmove(void *, const void *, size_t...

...e limit the optimization to cases where the constant is (for example) < 20, a small performance hit from the counter may not matter. > Additionally, I wouldn't be surprised if many systems don't consider > strnlen to be the fast path, so it would be even worse than using e.g. > memchr for this. The strnlen implementations I've looked at don't seem much different from their strlen counterparts in the common libc's I looked at. For example, glibc has asm implementations of both for common platforms. FreeBSD only has asm implementations of strlen, but those are only fo...

I'm trying to fix a longstanding bug with library function calls on platforms where int is passed sign-extended in a register (it badly affects SystemZ, and has a chance of affecting PowerPC64, SPARC64, MIPS64 as well). The problem is that, on these platforms, C int corresponds to a "i32 signext" parameter, but all LLVM passes inserting library calls currently use just

...close fcntl fcntl-h fcntl-safer fdopendir filevercmp float fts full-write getcwd getdtablesize getopt-gnu getopt-posix gettext-h hash hash-pjw i-ring include_next inline intprops inttypes lchown lstat malloc-posix memchr mempcpy memrchr mkdir multiarch open openat openat-die openat-safer realloc-posix rmdir safe-read safe-write same-inode save-cwd size_max ssize_t stat stdarg stdbool stddef stdint stdio stdlib strdup-pos...

...close fcntl fcntl-h fcntl-safer fdopendir filevercmp float fts full-write getcwd getdtablesize getopt-gnu getopt-posix gettext-h hash hash-pjw i-ring include_next inline intprops inttypes lchown lstat malloc-posix memchr mempcpy memrchr mkdir multiarch open openat openat-die openat-safer realloc-posix rmdir safe-read safe-write same-inode save-cwd size_max ssize_t stat stdarg stdbool stddef stdint stdio stdlib strdup-pos...

...close fcntl fcntl-h fcntl-safer fdopendir filevercmp float fts full-write getcwd getdtablesize getopt-gnu getopt-posix gettext-h hash hash-pjw i-ring include_next inline intprops inttypes lchown lstat malloc-posix memchr mempcpy memrchr mkdir multiarch open openat openat-die openat-safer realloc-posix rmdir safe-read safe-write same-inode save-cwd size_max ssize_t stat stdarg stdbool stddef stdint stdio stdlib strdup-pos...

...close fcntl fcntl-h fcntl-safer fdopendir filevercmp float fts full-write getcwd getdtablesize getopt-gnu getopt-posix gettext-h hash hash-pjw i-ring include_next inline intprops inttypes lchown lstat malloc-posix memchr mempcpy memrchr mkdir multiarch open openat openat-die openat-safer realloc-posix rmdir safe-read safe-write same-inode save-cwd size_max ssize_t stat stdarg stdbool stddef stdint stdio stdlib strdup-pos...

...close fcntl fcntl-h fcntl-safer fdopendir filevercmp float fts full-write getcwd getdtablesize getopt-gnu getopt-posix gettext-h hash hash-pjw i-ring include_next inline intprops inttypes lchown lstat malloc-posix memchr mempcpy memrchr mkdir multiarch open openat openat-die openat-safer realloc-posix rmdir safe-read safe-write same-inode save-cwd size_max ssize_t stat stdarg stdbool stddef stdint stdio stdlib strdup-pos...

...close fcntl fcntl-h fcntl-safer fdopendir filevercmp float fts full-write getcwd getdtablesize getopt-gnu getopt-posix gettext-h hash hash-pjw i-ring include_next inline intprops inttypes lchown lstat malloc-posix memchr mempcpy memrchr mkdir multiarch open openat openat-die openat-safer realloc-posix rmdir safe-read safe-write same-inode save-cwd size_max ssize_t stat stdarg stdbool stddef stdint stdio stdlib strdup-pos...

...close fcntl fcntl-h fcntl-safer fdopendir filevercmp float fts full-write getcwd getdtablesize getopt-gnu getopt-posix gettext-h hash hash-pjw i-ring include_next inline intprops inttypes lchown lstat malloc-posix memchr mempcpy memrchr mkdir multiarch open openat openat-die openat-safer realloc-posix rmdir safe-read safe-write same-inode save-cwd size_max ssize_t stat stdarg stdbool stddef stdint stdio stdlib strdup-pos...

...close fcntl fcntl-h fcntl-safer fdopendir filevercmp float fts full-write getcwd getdtablesize getopt-gnu getopt-posix gettext-h hash hash-pjw i-ring include_next inline intprops inttypes lchown lstat malloc-posix memchr mempcpy memrchr mkdir multiarch open openat openat-die openat-safer realloc-posix rmdir safe-read safe-write same-inode save-cwd size_max ssize_t stat stdarg stdbool stddef stdint stdio stdlib strdup-pos...

...close fcntl fcntl-h fcntl-safer fdopendir filevercmp float fts full-write getcwd getdtablesize getopt-gnu getopt-posix gettext-h hash hash-pjw i-ring include_next inline intprops inttypes lchown lstat malloc-posix memchr mempcpy memrchr mkdir multiarch open openat openat-die openat-safer realloc-posix rmdir safe-read safe-write same-inode save-cwd size_max ssize_t stat stdarg stdbool stddef stdint stdio stdlib strdup-pos...

...close fcntl fcntl-h fcntl-safer fdopendir filevercmp float fts full-write getcwd getdtablesize getopt-gnu getopt-posix gettext-h hash hash-pjw i-ring include_next inline intprops inttypes lchown lstat malloc-posix memchr mempcpy memrchr mkdir multiarch open openat openat-die openat-safer realloc-posix rmdir safe-read safe-write same-inode save-cwd size_max ssize_t stat stdarg stdbool stddef stdint stdio stdlib strdup-pos...

...close fcntl fcntl-h fcntl-safer fdopendir filevercmp float fts full-write getcwd getdtablesize getopt-gnu getopt-posix gettext-h hash hash-pjw i-ring include_next inline intprops inttypes lchown lstat malloc-posix memchr mempcpy memrchr mkdir multiarch open openat openat-die openat-safer realloc-posix rmdir safe-read safe-write same-inode save-cwd size_max ssize_t stat stdarg stdbool stddef stdint stdio stdlib strdup-pos...

...close fcntl fcntl-h fcntl-safer fdopendir filevercmp float fts full-write getcwd getdtablesize getopt-gnu getopt-posix gettext-h hash hash-pjw i-ring include_next inline intprops inttypes lchown lstat malloc-posix memchr mempcpy memrchr mkdir multiarch open openat openat-die openat-safer realloc-posix rmdir safe-read safe-write same-inode save-cwd size_max ssize_t stat stdarg stdbool stddef stdint stdio stdlib strdup-pos...

...close fcntl fcntl-h fcntl-safer fdopendir filevercmp float fts full-write getcwd getdtablesize getopt-gnu getopt-posix gettext-h hash hash-pjw i-ring include_next inline intprops inttypes lchown lstat malloc-posix memchr mempcpy memrchr mkdir multiarch open openat openat-die openat-safer realloc-posix rmdir safe-read safe-write same-inode save-cwd size_max ssize_t stat stdarg stdbool stddef stdint stdio stdlib strdup-pos...

...close fcntl fcntl-h fcntl-safer fdopendir filevercmp float fts full-write getcwd getdtablesize getopt-gnu getopt-posix gettext-h hash hash-pjw i-ring include_next inline intprops inttypes lchown lstat malloc-posix memchr mempcpy memrchr mkdir multiarch open openat openat-die openat-safer realloc-posix rmdir safe-read safe-write same-inode save-cwd size_max ssize_t stat stdarg stdbool stddef stdint stdio stdlib strdup-pos...