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Diffstat (limited to '')
| -rw-r--r-- | compat/pwrite.c | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/compat/pwrite.c b/compat/pwrite.c new file mode 100644 index 0000000..82f5f55 --- /dev/null +++ b/compat/pwrite.c @@ -0,0 +1,29 @@ +/* + * Public domain + * + * Kinichiro Inoguchi <inoguchi@openbsd.org> + */ + +#ifdef _WIN32 + +#define NO_REDEF_POSIX_FUNCTIONS + +#include <unistd.h> + +ssize_t +pwrite(int d, const void *buf, size_t nbytes, off_t offset) +{ + off_t cpos, opos, rpos; + ssize_t bytes; + if((cpos = lseek(d, 0, SEEK_CUR)) == -1) + return -1; + if((opos = lseek(d, offset, SEEK_SET)) == -1) + return -1; + if((bytes = write(d, buf, nbytes)) == -1) + return -1; + if((rpos = lseek(d, cpos, SEEK_SET)) == -1) + return -1; + return bytes; +} + +#endif |