From 02fec4701cee79f875c1d02b8b4aee09380dbcb8 Mon Sep 17 00:00:00 2001 From: Guillaume Cottenceau Date: Thu, 4 Jan 2001 20:04:45 +0000 Subject: integrate dietlibc/stdio per default for cdrom and disk only installs --- mdk-stage1/dietlibc/lib/lockf.c | 37 +++++++++++++++++++++++++++++++++++++ 1 file changed, 37 insertions(+) create mode 100644 mdk-stage1/dietlibc/lib/lockf.c (limited to 'mdk-stage1/dietlibc/lib/lockf.c') diff --git a/mdk-stage1/dietlibc/lib/lockf.c b/mdk-stage1/dietlibc/lib/lockf.c new file mode 100644 index 000000000..2b1d004ef --- /dev/null +++ b/mdk-stage1/dietlibc/lib/lockf.c @@ -0,0 +1,37 @@ +#include +#include +#include +#include + +int lockf(int fd, int cmd, off_t len) { + struct flock fl; + fl.l_whence=SEEK_CUR; + fl.l_start=0; + fl.l_len=len; + fl.l_pid=0; + switch (cmd) { + case F_TEST: + if (fcntl(fd,F_GETLK,&fl)<0) + return -1; + if (fl.l_type == F_UNLCK || fl.l_pid == getpid ()) + return 0; + errno=EACCES; + return -1; + case F_ULOCK: + fl.l_type=F_UNLCK; + cmd=F_SETLK; + break; + case F_LOCK: + fl.l_type = F_WRLCK; + cmd = F_SETLKW; + break; + case F_TLOCK: + fl.l_type = F_WRLCK; + cmd = F_SETLK; + break; + default: + errno=EINVAL; + return -1; + } + return fcntl(fd,cmd,&fl); +} -- cgit v1.2.1