diff options
Diffstat (limited to 'src/cmd/sam/sys.c')
-rw-r--r-- | src/cmd/sam/sys.c | 60 |
1 files changed, 60 insertions, 0 deletions
diff --git a/src/cmd/sam/sys.c b/src/cmd/sam/sys.c new file mode 100644 index 00000000..db54d28d --- /dev/null +++ b/src/cmd/sam/sys.c @@ -0,0 +1,60 @@ +#include "sam.h" + +static int inerror=FALSE; + +/* + * A reasonable interface to the system calls + */ + +void +resetsys(void) +{ + inerror = FALSE; +} + +void +syserror(char *a) +{ + char buf[ERRMAX]; + + if(!inerror){ + inerror=TRUE; + errstr(buf, sizeof buf); + dprint("%s: ", a); + error_s(Eio, buf); + } +} + +int +Read(int f, void *a, int n) +{ + char buf[ERRMAX]; + + if(read(f, (char *)a, n)!=n) { + if (lastfile) + lastfile->rescuing = 1; + errstr(buf, sizeof buf); + if (downloaded) + fprint(2, "read error: %s\n", buf); + rescue(); + exits("read"); + } + return n; +} + +int +Write(int f, void *a, int n) +{ + int m; + + if((m=write(f, (char *)a, n))!=n) + syserror("write"); + return m; +} + +void +Seek(int f, long n, int w) +{ + if(seek(f, n, w)==-1) + syserror("seek"); +} |