X-Git-Url: https://git.dogcows.com/gitweb?a=blobdiff_plain;f=tests%2Fmksparse.c;h=5fab8d85933ecb332af69cc1e4e06f96aae486c3;hb=2bda83b48d8a6807632312403561b11b79048443;hp=3a712f78e9d1a17d825d08c483e759df79f4bc62;hpb=41d042c05ff68c236c5e3842f69b61fb5c027c76;p=chaz%2Ftar diff --git a/tests/mksparse.c b/tests/mksparse.c index 3a712f7..5fab8d8 100644 --- a/tests/mksparse.c +++ b/tests/mksparse.c @@ -30,8 +30,10 @@ char *progname; char *buffer; size_t buffer_size; -void -die (char *fmt, ...) +static void die (char const *, ...) __attribute__ ((noreturn, + format (printf, 1, 2))); +static void +die (char const *fmt, ...) { va_list ap; @@ -40,12 +42,13 @@ die (char *fmt, ...) vfprintf (stderr, fmt, ap); va_end (ap); fprintf (stderr, "\n"); + exit (1); } -void +static void mkhole (int fd, off_t displ) { - if (displ = lseek (fd, displ, SEEK_CUR) == -1) + if (lseek (fd, displ, SEEK_CUR) == -1) { perror ("lseek"); exit (1); @@ -53,11 +56,9 @@ mkhole (int fd, off_t displ) ftruncate (fd, lseek (fd, 0, SEEK_CUR)); } -void +static void mksparse (int fd, off_t displ, char *marks) { - int i; - for (; *marks; marks++) { memset (buffer, *marks, buffer_size); @@ -66,7 +67,7 @@ mksparse (int fd, off_t displ, char *marks) perror ("write"); exit (1); } - + if (lseek (fd, displ, SEEK_CUR) == -1) { perror ("lseek"); @@ -75,14 +76,15 @@ mksparse (int fd, off_t displ, char *marks) } } -void -usage () +static void usage (void) __attribute__ ((noreturn)); +static void +usage (void) { printf ("Usage: mksparse filename blocksize disp letters [disp letters...] [disp]\n"); exit (1); } -int +static int xlat_suffix (off_t *vp, char *p) { if (p[1]) @@ -92,7 +94,7 @@ xlat_suffix (off_t *vp, char *p) case 'g': case 'G': *vp *= 1024; - + case 'm': case 'M': *vp *= 1024; @@ -107,7 +109,7 @@ xlat_suffix (off_t *vp, char *p) } return 0; } - + int main (int argc, char **argv) { @@ -115,20 +117,20 @@ main (int argc, char **argv) int fd; char *p; off_t n; - + progname = strrchr (argv[0], '/'); if (progname) progname++; else progname = argv[0]; - + if (argc < 4) usage (); fd = open (argv[1], O_CREAT|O_TRUNC|O_RDWR, 0644); if (fd < 0) die ("cannot open %s", argv[1]); - + n = strtoul (argv[2], &p, 0); if (n <= 0 || (*p && xlat_suffix (&n, p))) die ("Invalid buffer size: %s", argv[2]); @@ -136,11 +138,11 @@ main (int argc, char **argv) buffer = malloc (buffer_size); if (!buffer) die ("Not enough memory"); - + for (i = 3; i < argc; i += 2) { off_t displ; - + displ = strtoul (argv[i], &p, 0); if (displ < 0 || (*p && xlat_suffix (&displ, p))) die ("Invalid displacement: %s", argv[i]); @@ -153,7 +155,7 @@ main (int argc, char **argv) else mksparse (fd, displ, argv[i+1]); } - + close(fd); return 0; }