From 6019598fdb9d223beec7da5848cf950ca90e85e7 Mon Sep 17 00:00:00 2001 From: Jakob Unterwurzacher Date: Sun, 24 May 2020 23:46:41 +0200 Subject: contrib: collect getdents stuff in getdents-debug folder --- contrib/getdents-debug/getdents/.gitignore | 1 + contrib/getdents-debug/getdents/getdents.go | 75 ++++++++++++++++++++++++++++ contrib/getdents-debug/getdents_c/.gitignore | 1 + contrib/getdents-debug/getdents_c/Makefile | 2 + contrib/getdents-debug/getdents_c/getdents.c | 39 +++++++++++++++ contrib/getdents/.gitignore | 1 - contrib/getdents/getdents.go | 75 ---------------------------- contrib/getdents_c/.gitignore | 1 - contrib/getdents_c/Makefile | 2 - contrib/getdents_c/getdents.c | 39 --------------- 10 files changed, 118 insertions(+), 118 deletions(-) create mode 100644 contrib/getdents-debug/getdents/.gitignore create mode 100644 contrib/getdents-debug/getdents/getdents.go create mode 100644 contrib/getdents-debug/getdents_c/.gitignore create mode 100644 contrib/getdents-debug/getdents_c/Makefile create mode 100644 contrib/getdents-debug/getdents_c/getdents.c delete mode 100644 contrib/getdents/.gitignore delete mode 100644 contrib/getdents/getdents.go delete mode 100644 contrib/getdents_c/.gitignore delete mode 100644 contrib/getdents_c/Makefile delete mode 100644 contrib/getdents_c/getdents.c (limited to 'contrib') diff --git a/contrib/getdents-debug/getdents/.gitignore b/contrib/getdents-debug/getdents/.gitignore new file mode 100644 index 0000000..6dae481 --- /dev/null +++ b/contrib/getdents-debug/getdents/.gitignore @@ -0,0 +1 @@ +/getdents diff --git a/contrib/getdents-debug/getdents/getdents.go b/contrib/getdents-debug/getdents/getdents.go new file mode 100644 index 0000000..a70692a --- /dev/null +++ b/contrib/getdents-debug/getdents/getdents.go @@ -0,0 +1,75 @@ +/* +Small tool to try to debug unix.Getdents problems on CIFS mounts +( https://github.com/rfjakob/gocryptfs/issues/483 ) + +Example output: + +$ while sleep 1 ; do ./getdents /mnt/synology/public/tmp/g1 ; done +unix.Getdents fd3: n=4176, err= +unix.Getdents fd3: n=4176, err= +unix.Getdents fd3: n=4176, err= +unix.Getdents fd3: n=4176, err= +unix.Getdents fd3: n=4176, err= +unix.Getdents fd3: n=3192, err= +unix.Getdents fd3: n=0, err= +total 24072 bytes +unix.Getdents fd3: n=4176, err= +unix.Getdents fd3: n=4176, err= +unix.Getdents fd3: n=4176, err= +unix.Getdents fd3: n=4176, err= +unix.Getdents fd3: n=-1, err=no such file or directory +total 16704 bytes +unix.Getdents fd3: n=4176, err= +unix.Getdents fd3: n=4176, err= +unix.Getdents fd3: n=4176, err= +unix.Getdents fd3: n=4176, err= +unix.Getdents fd3: n=4176, err= +unix.Getdents fd3: n=3192, err= +unix.Getdents fd3: n=0, err= +total 24072 bytes +*/ + +package main + +import ( + "flag" + "fmt" + "log" + "os" + + "golang.org/x/sys/unix" +) + +const ( + myName = "getdents" +) + +func main() { + flag.Usage = func() { + fmt.Fprintf(os.Stderr, "Usage: %s PATH\n", myName) + fmt.Fprintf(os.Stderr, "Run getdents(2) on PATH\n") + os.Exit(1) + } + flag.Parse() + if flag.NArg() != 1 { + flag.Usage() + } + path := flag.Arg(0) + + fd, err := unix.Open(path, unix.O_RDONLY, 0) + if err != nil { + log.Fatalf("unix.Open returned err=%v", err) + } + + tmp := make([]byte, 10000) + sum := 0 + for { + n, err := unix.Getdents(fd, tmp) + fmt.Printf("unix.Getdents fd%d: n=%d, err=%v\n", fd, n, err) + if n <= 0 { + fmt.Printf("total %d bytes\n", sum) + break + } + sum += n + } +} diff --git a/contrib/getdents-debug/getdents_c/.gitignore b/contrib/getdents-debug/getdents_c/.gitignore new file mode 100644 index 0000000..2f94993 --- /dev/null +++ b/contrib/getdents-debug/getdents_c/.gitignore @@ -0,0 +1 @@ +/getdents_c diff --git a/contrib/getdents-debug/getdents_c/Makefile b/contrib/getdents-debug/getdents_c/Makefile new file mode 100644 index 0000000..95e47dc --- /dev/null +++ b/contrib/getdents-debug/getdents_c/Makefile @@ -0,0 +1,2 @@ +getdents_c: *.c Makefile + gcc getdents.c -o getdents_c diff --git a/contrib/getdents-debug/getdents_c/getdents.c b/contrib/getdents-debug/getdents_c/getdents.c new file mode 100644 index 0000000..98c2346 --- /dev/null +++ b/contrib/getdents-debug/getdents_c/getdents.c @@ -0,0 +1,39 @@ +// See ../getdents/getdents.go for some info on why +// this exists. + +#include +#include +#include +#include +#include +#include +#include +#include + +int main(int argc, char *argv[]) +{ + if(argc < 2) { + printf("Usage: %s PATH\n", argv[0]); + printf("Run getdents(2) on PATH\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; + } + sum += n; + } +} diff --git a/contrib/getdents/.gitignore b/contrib/getdents/.gitignore deleted file mode 100644 index 6dae481..0000000 --- a/contrib/getdents/.gitignore +++ /dev/null @@ -1 +0,0 @@ -/getdents diff --git a/contrib/getdents/getdents.go b/contrib/getdents/getdents.go deleted file mode 100644 index a70692a..0000000 --- a/contrib/getdents/getdents.go +++ /dev/null @@ -1,75 +0,0 @@ -/* -Small tool to try to debug unix.Getdents problems on CIFS mounts -( https://github.com/rfjakob/gocryptfs/issues/483 ) - -Example output: - -$ while sleep 1 ; do ./getdents /mnt/synology/public/tmp/g1 ; done -unix.Getdents fd3: n=4176, err= -unix.Getdents fd3: n=4176, err= -unix.Getdents fd3: n=4176, err= -unix.Getdents fd3: n=4176, err= -unix.Getdents fd3: n=4176, err= -unix.Getdents fd3: n=3192, err= -unix.Getdents fd3: n=0, err= -total 24072 bytes -unix.Getdents fd3: n=4176, err= -unix.Getdents fd3: n=4176, err= -unix.Getdents fd3: n=4176, err= -unix.Getdents fd3: n=4176, err= -unix.Getdents fd3: n=-1, err=no such file or directory -total 16704 bytes -unix.Getdents fd3: n=4176, err= -unix.Getdents fd3: n=4176, err= -unix.Getdents fd3: n=4176, err= -unix.Getdents fd3: n=4176, err= -unix.Getdents fd3: n=4176, err= -unix.Getdents fd3: n=3192, err= -unix.Getdents fd3: n=0, err= -total 24072 bytes -*/ - -package main - -import ( - "flag" - "fmt" - "log" - "os" - - "golang.org/x/sys/unix" -) - -const ( - myName = "getdents" -) - -func main() { - flag.Usage = func() { - fmt.Fprintf(os.Stderr, "Usage: %s PATH\n", myName) - fmt.Fprintf(os.Stderr, "Run getdents(2) on PATH\n") - os.Exit(1) - } - flag.Parse() - if flag.NArg() != 1 { - flag.Usage() - } - path := flag.Arg(0) - - fd, err := unix.Open(path, unix.O_RDONLY, 0) - if err != nil { - log.Fatalf("unix.Open returned err=%v", err) - } - - tmp := make([]byte, 10000) - sum := 0 - for { - n, err := unix.Getdents(fd, tmp) - fmt.Printf("unix.Getdents fd%d: n=%d, err=%v\n", fd, n, err) - if n <= 0 { - fmt.Printf("total %d bytes\n", sum) - break - } - sum += n - } -} diff --git a/contrib/getdents_c/.gitignore b/contrib/getdents_c/.gitignore deleted file mode 100644 index 2f94993..0000000 --- a/contrib/getdents_c/.gitignore +++ /dev/null @@ -1 +0,0 @@ -/getdents_c diff --git a/contrib/getdents_c/Makefile b/contrib/getdents_c/Makefile deleted file mode 100644 index 95e47dc..0000000 --- a/contrib/getdents_c/Makefile +++ /dev/null @@ -1,2 +0,0 @@ -getdents_c: *.c Makefile - gcc getdents.c -o getdents_c diff --git a/contrib/getdents_c/getdents.c b/contrib/getdents_c/getdents.c deleted file mode 100644 index 98c2346..0000000 --- a/contrib/getdents_c/getdents.c +++ /dev/null @@ -1,39 +0,0 @@ -// See ../getdents/getdents.go for some info on why -// this exists. - -#include -#include -#include -#include -#include -#include -#include -#include - -int main(int argc, char *argv[]) -{ - if(argc < 2) { - printf("Usage: %s PATH\n", argv[0]); - printf("Run getdents(2) on PATH\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; - } - sum += n; - } -} -- cgit v1.2.3