diff options
Diffstat (limited to 'sysdeps/unix/sysv/linux/mips/pread.c')
| -rw-r--r-- | sysdeps/unix/sysv/linux/mips/pread.c | 28 |
1 files changed, 27 insertions, 1 deletions
diff --git a/sysdeps/unix/sysv/linux/mips/pread.c b/sysdeps/unix/sysv/linux/mips/pread.c index 45305d2..e6cb21f 100644 --- a/sysdeps/unix/sysv/linux/mips/pread.c +++ b/sysdeps/unix/sysv/linux/mips/pread.c @@ -22,12 +22,19 @@ #include <unistd.h> #include <endian.h> -#include <sysdep.h> +#include <sysdep-cancel.h> #include <sys/syscall.h> #include <bp-checks.h> #include <kernel-features.h> +#ifdef __NR_pread64 /* Newer kernels renamed but it's the same. */ +# ifdef __NR_pread +# error "__NR_pread and __NR_pread64 both defined???" +# endif +# define __NR_pread __NR_pread64 +#endif + #if defined __NR_pread || __ASSUME_PREAD_SYSCALL > 0 # if __ASSUME_PREAD_SYSCALL == 0 @@ -48,6 +55,22 @@ __libc_pread (fd, buf, count, offset) { ssize_t result; + if (SINGLE_THREAD_P) + { + /* First try the syscall. */ + assert (sizeof (offset) == 4); + result = INLINE_SYSCALL (pread, 6, fd, CHECK_N (buf, count), count, 0, + __LONG_LONG_PAIR (offset >> 31, offset)); +# if __ASSUME_PREAD_SYSCALL == 0 + if (result == -1 && errno == ENOSYS) + /* No system call available. Use the emulation. */ + result = __emulate_pread (fd, buf, count, offset); +# endif + return result; + } + + int oldtype = LIBC_CANCEL_ASYNC (); + /* First try the syscall. */ assert (sizeof (offset) == 4); result = INLINE_SYSCALL (pread, 6, fd, CHECK_N (buf, count), count, 0, @@ -57,6 +80,9 @@ __libc_pread (fd, buf, count, offset) /* No system call available. Use the emulation. */ result = __emulate_pread (fd, buf, count, offset); # endif + + LIBC_CANCEL_RESET (oldtype); + return result; } |