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authorJakob Unterwurzacher2020-05-28 23:21:35 +0200
committerJakob Unterwurzacher2020-05-28 23:23:53 +0200
commit22e3eec15302eac28c1a2ac3f9af29c2c9e82a3c (patch)
treef1e3311175a72aa2d8b0c19eb20fe1e5c5531af6 /contrib/getdents-debug/getdents_c/getdents.c
parentb275c53fa79c7acc555f382e0831c81491be3183 (diff)
getdents-debug: loop and stop on first error
Also try to improve and unify output a little. $ ./getdents /usr/share/man/man1 1: unix.Getdents: n=9984; n=9984; n=9968; n=9976; n=9984; n=9968; n=10000; n=9976; n=9992; n=10000; n=9976; n=9992; n=2312; n=0; err=<nil>; total 122112 bytes 2: unix.Getdents: n=9984; n=48; n=9976; n=9968; n=9976; n=9976; n=9992; n=9984; n=9992; n=10000; n=9976; n=9968; n=10000; n=2272; n=0; err=<nil>; total 122112 bytes 3: unix.Getdents: n=9984; n=9984; n=9968; n=704; n=10000; n=10000; n=9968; n=9968; n=9992; n=10000; n=9960; n=9992; n=9992; n=1600; n=0; err=<nil>; total 122112 bytes 4: unix.Getdents: n=9984; n=9984; n=9968; n=9976; n=9984; n=32; n=9992; n=9984; n=9992; n=10000; n=9976; n=9968; n=10000; n=2272; n=0; err=<nil>; total 122112 bytes $ ./getdents_c /usr/share/man/man1 1: getdents64: n=9984; n=9984; n=9968; n=9976; n=9984; n=9968; n=10000; n=9976; n=9992; n=10000; n=9976; n=9992; n=2312; n=0; errno=0 total 122112 bytes 2: getdents64: n=9984; n=9984; n=9968; n=9976; n=9984; n=9968; n=10000; n=9976; n=9992; n=10000; n=9976; n=9992; n=2312; n=0; errno=0 total 122112 bytes 3: getdents64: n=9984; n=9984; n=9968; n=9976; n=9984; n=9968; n=10000; n=9976; n=9992; n=10000; n=9976; n=9992; n=2312; n=0; errno=0 total 122112 bytes 4: getdents64: n=9984; n=9984; n=9968; n=9976; n=9984; n=9968; n=10000; n=9976; n=9992; n=10000; n=9976; n=9992; n=2312; n=0; errno=0 total 122112 bytes
Diffstat (limited to 'contrib/getdents-debug/getdents_c/getdents.c')
-rw-r--r--contrib/getdents-debug/getdents_c/getdents.c41
1 files changed, 25 insertions, 16 deletions
diff --git a/contrib/getdents-debug/getdents_c/getdents.c b/contrib/getdents-debug/getdents_c/getdents.c
index 98c2346..936bd0b 100644
--- a/contrib/getdents-debug/getdents_c/getdents.c
+++ b/contrib/getdents-debug/getdents_c/getdents.c
@@ -12,28 +12,37 @@
int main(int argc, char *argv[])
{
- if(argc < 2) {
+ if(argc != 2) {
printf("Usage: %s PATH\n", argv[0]);
- printf("Run getdents(2) on PATH\n");
+ printf("Run getdents(2) on PATH in a 100ms loop\n");
exit(1);
}
const char *path = argv[1];
- int fd = open(path, O_RDONLY);
- if (fd == -1) {
- perror("open");
- exit(1);
- }
- char tmp[10000];
- int sum = 0;
- for ( ; ; ) {
- int n = syscall(SYS_getdents64, fd, tmp, sizeof(tmp));
- printf("getdents64 fd%d: n=%d, errno=%d\n", fd, n, errno);
- if (n <= 0) {
- printf("total %d bytes\n", sum);
- break;
+ for (int i = 1 ; ; i ++ ) {
+ int fd = open(path, O_RDONLY);
+ if (fd == -1) {
+ perror("open");
+ exit(1);
+ }
+
+ char tmp[10000];
+ int sum = 0;
+ printf("%3d: getdents64: ", i);
+ for ( ; ; ) {
+ int n = syscall(SYS_getdents64, fd, tmp, sizeof(tmp));
+ printf("n=%d; ", n);
+ if (n <= 0) {
+ printf("errno=%d total %d bytes\n", errno, sum);
+ if (n < 0) {
+ exit(1);
+ }
+ break;
+ }
+ sum += n;
}
- sum += n;
+ close(fd);
+ usleep(100000);
}
}