diff options
Diffstat (limited to 'src/libstddjb/openwritevnclose5.c')
-rw-r--r-- | src/libstddjb/openwritevnclose5.c | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/src/libstddjb/openwritevnclose5.c b/src/libstddjb/openwritevnclose5.c new file mode 100644 index 0000000..6465c4d --- /dev/null +++ b/src/libstddjb/openwritevnclose5.c @@ -0,0 +1,30 @@ +/* ISC license. */ + +#include <string.h> +#include <stdio.h> +#include <stdlib.h> + +#include <skalibs/posixplz.h> +#include <skalibs/djbunix.h> + +#define SUFFIX ":skalibs-openwritevnclose:XXXXXX" + +int openwritevnclose5 (char const *fn, struct iovec const *v, unsigned int vlen, devino *devino, unsigned int options) +{ + int fd ; + size_t fnlen = strlen(fn) ; + char tmp[fnlen + sizeof(SUFFIX)] ; + memcpy(tmp, fn, fnlen) ; + memcpy(tmp + fnlen, SUFFIX, sizeof(SUFFIX)) ; + fd = mkstemp(tmp) ; + if (fd < 0) return 0 ; + if (!writevnclose_unsafe5(fd, v, vlen, devino, options)) goto failclose ; + if (rename(tmp, fn) < 0) goto fail ; + return 1 ; + + failclose: + fd_close(fd) ; + fail: + unlink_void(tmp) ; + return 0 ; +} |