u-boot.git/include/linux/string.h, branch v2026.07

string: add strdup_const and kstrdup_const

2026-04-21T17:19:49Z

Extend Linux compat by adding kstrdup_const(), backed by lib/string.c. This leverages U-Boots .rodata section on ARM64 to avoid pointlessly duplicating const strings. This is used by the Linux CCF_FULL port and may be useful elsewhere in U-Boot. Signed-off-by: Casey Connolly

lib: implement strnstr()

2025-02-12T18:37:12Z

Implement library function strnstr(). Implement strstr() using strnstr(). Sort the includes. Signed-off-by: Heinrich Schuchardt Reviewed-by: Ilias Apalodimas [jf: replace by , folded from next patch] Signed-off-by: Jerome Forissier

include: linux: Remove duplicate newlines

2024-07-29T21:01:04Z

Drop all duplicate newlines. No functional change. Signed-off-by: Marek Vasut

doc: replace @return by Return:

2022-01-19T17:11:34Z

Sphinx expects Return: and not @return to indicate a return value. find . -name '*.c' -exec \ sed -i 's/^\(\s\)\*\(\s*\)@return\(\s\)/\1*\2Return:\3/' {} \; find . -name '*.h' -exec \ sed -i 's/^\(\s\)\*\(\s*\)@return\(\s\)/\1*\2Return:\3/' {} \; Signed-off-by: Heinrich Schuchardt

lib: Add memdup()

2021-10-08T19:53:26Z

Add a function to duplicate a memory region, a little like strdup(). Signed-off-by: Simon Glass

lib: string: Implement strlcat

2021-04-12T21:44:55Z

This introduces strlcat, which provides a safer interface than strncat. It never copies more than its size bytes, including the terminating nul. In addition, it never reads past dest[size - 1], even if dest is not nul-terminated. This also removes the stub for dwc3 now that we have a proper implementation. Signed-off-by: Sean Anderson Reviewed-by: Simon Glass

sandbox: Rename strdup() functions

2020-02-06T02:33:46Z

These functions include calls to a memory-allocation routine and so need to use the system routine when called from a library. To preserve access to these functions for libraries that need it, such as SDL, rename these functions within U-Boot. Signed-off-by: Simon Glass

string: Allow arch override of strndup() also

2020-02-06T02:33:46Z

At present architectures can override strdup() but not strndup(). Use the same option for both. Signed-off-by: Simon Glass

lib: Implement strndup()

2019-06-05T16:16:32Z

Signed-off-by: Thierry Reding Signed-off-by: Tom Warren

string: Add strcspn()

2017-06-01T13:03:12Z

Add an implementation of strcspn() which returns the number of initial characters that do not match any in a rejection list. Signed-off-by: Simon Glass