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tools/nolibc: cast pointers returned from system calls through integers

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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
This commit is contained in:
Thomas Weißschuh 2026-04-18 12:19:58 +02:00
parent 32db83195f
commit c503c3deb9
2 changed files with 4 additions and 4 deletions
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2
tools/include/nolibc/sys.h
View File

@ -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))

6
tools/include/nolibc/sys/mman.h
View File

@ -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))