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| author | Thomas Weißschuh <linux@weissschuh.net> | 2026-04-18 12:19:58 +0200 |
|---|---|---|
| committer | Thomas Weißschuh <linux@weissschuh.net> | 2026-04-27 20:08:54 +0200 |
| commit | c503c3deb9b56645413d8f8560dcc24efe7cea59 (patch) | |
| tree | ecb1078f987c841be26fdd06b2237288960436a9 /tools/include | |
| parent | 32db83195f75bda670ca9282d9868ad02b1d6185 (diff) | |
| download | lwn-c503c3deb9b56645413d8f8560dcc24efe7cea59.tar.gz lwn-c503c3deb9b56645413d8f8560dcc24efe7cea59.zip | |
tools/nolibc: cast pointers returned from system calls through integers
Currently all system call wrappers return 'long' integers which can be
directly cast to 'void *' if the returned value is actually a pointer.
An upcoming change will change the system call wrappers to sometimes
return 'long long' which can not be cast to a pointer directly.
Add explicit cast through 'long' to prepare for this.
Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
Acked-by: Willy Tarreau <w@1wt.eu>
Link: https://patch.msgid.link/20260418-nolibc-largefile-v1-3-b91f0775bac3@weissschuh.net
Diffstat (limited to 'tools/include')
| -rw-r--r-- | tools/include/nolibc/sys.h | 2 | ||||
| -rw-r--r-- | tools/include/nolibc/sys/mman.h | 6 |
2 files changed, 4 insertions, 4 deletions
diff --git a/tools/include/nolibc/sys.h b/tools/include/nolibc/sys.h index 841158eb07c3..33f9c970ae57 100644 --- a/tools/include/nolibc/sys.h +++ b/tools/include/nolibc/sys.h @@ -101,7 +101,7 @@ static __inline__ int __nolibc_enosys(const char *syscall, ...) static __attribute__((unused)) void *_sys_brk(void *addr) { - return (void *)__nolibc_syscall1(__NR_brk, addr); + return (void *)(unsigned long)__nolibc_syscall1(__NR_brk, addr); } static __attribute__((unused)) diff --git a/tools/include/nolibc/sys/mman.h b/tools/include/nolibc/sys/mman.h index 91d77a51412d..72bc1d43d1d4 100644 --- a/tools/include/nolibc/sys/mman.h +++ b/tools/include/nolibc/sys/mman.h @@ -27,7 +27,7 @@ void *_sys_mmap(void *addr, size_t length, int prot, int flags, int fd, n = __NR_mmap; #endif - return (void *)__nolibc_syscall6(n, addr, length, prot, flags, fd, offset); + return (void *)(unsigned long)__nolibc_syscall6(n, addr, length, prot, flags, fd, offset); } #endif @@ -46,8 +46,8 @@ void *mmap(void *addr, size_t length, int prot, int flags, int fd, off_t offset) static __attribute__((unused)) void *_sys_mremap(void *old_address, size_t old_size, size_t new_size, int flags, void *new_address) { - return (void *)__nolibc_syscall5(__NR_mremap, old_address, old_size, - new_size, flags, new_address); + return (void *)(unsigned long)__nolibc_syscall5(__NR_mremap, old_address, old_size, + new_size, flags, new_address); } static __attribute__((unused)) |