From f15aa3a552022743398a652165d76bf912c715e5 Mon Sep 17 00:00:00 2001 From: Guillaume Cottenceau Date: Mon, 14 May 2001 13:47:49 +0000 Subject: Initial revision --- mdk-stage1/dietlibc/libcruft/mkstemp.c | 23 +++++++++++++++++++++++ 1 file changed, 23 insertions(+) create mode 100644 mdk-stage1/dietlibc/libcruft/mkstemp.c (limited to 'mdk-stage1/dietlibc/libcruft/mkstemp.c') diff --git a/mdk-stage1/dietlibc/libcruft/mkstemp.c b/mdk-stage1/dietlibc/libcruft/mkstemp.c new file mode 100644 index 000000000..3b24ecb54 --- /dev/null +++ b/mdk-stage1/dietlibc/libcruft/mkstemp.c @@ -0,0 +1,23 @@ +#include +#include +#include +#include + +int mkstemp(char* template) { + char *tmp=template+strlen(template)-6; + int randfd; + int i,res; + unsigned int random; + for (i=0; i<6; ++i) if (tmp[i]!='X') { __set_errno(EINVAL); return -1; } + randfd=open("/dev/urandom",O_RDONLY); + for (;;) { + read(randfd,&random,sizeof(random)); + for (i=0; i<6; ++i) { + int hexdigit=(random>>(i*5))&0x1f; + tmp[i]=hexdigit>9?hexdigit+'a'-10:hexdigit+'0'; + } + res=open(template,O_CREAT|O_RDWR|O_EXCL,0600); + if (res>=0) return res; + } + close(randfd); +} -- cgit v1.2.1