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| author | Tavian Barnes <tavianator@tavianator.com> | 2024-04-18 16:16:18 -0400 |
|---|---|---|
| committer | Tavian Barnes <tavianator@tavianator.com> | 2024-04-19 15:50:45 -0400 |
| commit | 1207086b5a6341412c647480eea68c870b18bba1 (patch) | |
| tree | 3bdacc576075c5d7c71456c841e3e720c0eb84a4 | |
| parent | 29ddac2bf64bb305b285db86015abebe8a0bd8b3 (diff) | |
| download | bfs-1207086b5a6341412c647480eea68c870b18bba1.tar.xz | |
config: Check for getdents{,64}()
| -rw-r--r-- | config/flags.mk | 1 | ||||
| -rw-r--r-- | config/getdents.c | 10 | ||||
| -rw-r--r-- | config/getdents64-syscall.c | 12 | ||||
| -rw-r--r-- | config/getdents64.c | 10 | ||||
| -rw-r--r-- | config/header.mk | 3 | ||||
| -rw-r--r-- | src/dir.c | 14 | ||||
| -rw-r--r-- | src/dir.h | 4 |
7 files changed, 45 insertions, 9 deletions
diff --git a/config/flags.mk b/config/flags.mk index 9959d10..8a2e50e 100644 --- a/config/flags.mk +++ b/config/flags.mk @@ -36,7 +36,6 @@ export BFS_CPPFLAGS= \ -D_DARWIN_C_SOURCE \ -D_DEFAULT_SOURCE \ -D_GNU_SOURCE \ - -D_LARGEFILE64_SOURCE \ -D_POSIX_PTHREAD_SEMANTICS \ -D_FILE_OFFSET_BITS=64 \ -D_TIME_BITS=64 diff --git a/config/getdents.c b/config/getdents.c new file mode 100644 index 0000000..d0d4228 --- /dev/null +++ b/config/getdents.c @@ -0,0 +1,10 @@ +// Copyright © Tavian Barnes <tavianator@tavianator.com> +// SPDX-License-Identifier: 0BSD + +#include <dirent.h> + +int main(void) { + struct dirent de; + getdents(3, &de, 1024); + return 0; +} diff --git a/config/getdents64-syscall.c b/config/getdents64-syscall.c new file mode 100644 index 0000000..4838c14 --- /dev/null +++ b/config/getdents64-syscall.c @@ -0,0 +1,12 @@ +// Copyright © Tavian Barnes <tavianator@tavianator.com> +// SPDX-License-Identifier: 0BSD + +#include <dirent.h> +#include <sys/syscall.h> +#include <unistd.h> + +int main(void) { + struct dirent64 de; + syscall(SYS_getdents64, 3, &de, 1024); + return 0; +} diff --git a/config/getdents64.c b/config/getdents64.c new file mode 100644 index 0000000..1abf36d --- /dev/null +++ b/config/getdents64.c @@ -0,0 +1,10 @@ +// Copyright © Tavian Barnes <tavianator@tavianator.com> +// SPDX-License-Identifier: 0BSD + +#include <dirent.h> + +int main(void) { + struct dirent64 de; + getdents64(3, &de, 1024); + return 0; +} diff --git a/config/header.mk b/config/header.mk index 8867200..cc4ae05 100644 --- a/config/header.mk +++ b/config/header.mk @@ -9,6 +9,9 @@ include config/exports.mk # All header fragments we generate HEADERS := \ + ${GEN}/getdents.h \ + ${GEN}/getdents64.h \ + ${GEN}/getdents64-syscall.h \ ${GEN}/getprogname.h \ ${GEN}/getprogname-gnu.h \ ${GEN}/posix-spawn-addfchdir.h \ @@ -17,7 +17,7 @@ #include <unistd.h> #if BFS_USE_GETDENTS -# if __linux__ +# if BFS_HAS_GETDENTS64_SYSCALL # include <sys/syscall.h> # endif @@ -25,12 +25,14 @@ static ssize_t bfs_getdents(int fd, void *buf, size_t size) { sanitize_uninit(buf, size); -#if (__linux__ && __GLIBC__ && !__GLIBC_PREREQ(2, 30)) || __ANDROID__ - ssize_t ret = syscall(SYS_getdents64, fd, buf, size); -#elif __linux__ +#if BFS_HAS_GETDENTS + ssize_t ret = getdents(fd, buf, size); +#elif BFS_HAS_GETDENTS64 ssize_t ret = getdents64(fd, buf, size); +#elif BFS_HAS_GETDENTS64_SYSCALL + ssize_t ret = syscall(SYS_getdents64, fd, buf, size); #else - ssize_t ret = getdents(fd, buf, size); +# error "No getdents() implementation" #endif if (ret > 0) { @@ -42,7 +44,7 @@ static ssize_t bfs_getdents(int fd, void *buf, size_t size) { #endif // BFS_USE_GETDENTS -#if BFS_USE_GETDENTS && __linux__ +#if BFS_USE_GETDENTS && !BFS_HAS_GETDENTS /** Directory entry type for bfs_getdents() */ typedef struct dirent64 sys_dirent; #else @@ -14,8 +14,8 @@ * Whether the implementation uses the getdents() syscall directly, rather than * libc's readdir(). */ -#ifndef BFS_USE_GETDENTS -# define BFS_USE_GETDENTS (__linux__ || __FreeBSD__) +#if !defined(BFS_USE_GETDENTS) && (__linux__ || __FreeBSD__) +# define BFS_USE_GETDENTS (BFS_HAS_GETDENTS || BFS_HAS_GETDENTS64 | BFS_HAS_GETDENTS64_SYSCALL) #endif /** |