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author | Mole Shang <[email protected]> | 2024-02-11 14:44:22 +0800 |
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committer | Mole Shang <[email protected]> | 2024-02-11 16:06:15 +0800 |
commit | 2fe04bc8faa4bf737a86c36a8017473e84814f3b (patch) | |
tree | 2146d3dae86f21060e2e807ad364f5a949fd1c53 /user/trace.c | |
parent | 5ce1f630132d8b7b35b9dc46b4a55f860eb85d5c (diff) | |
parent | 48a5e34fcd07852b4a68825ce8e37feb6f6d04d7 (diff) | |
download | xv6-labs-2fe04bc8faa4bf737a86c36a8017473e84814f3b.tar.gz xv6-labs-2fe04bc8faa4bf737a86c36a8017473e84814f3b.tar.bz2 xv6-labs-2fe04bc8faa4bf737a86c36a8017473e84814f3b.zip |
Merge branch 'traps' into cow
Conflicts:
.gitignore
Makefile
conf/lab.mk
Diffstat (limited to 'user/trace.c')
-rw-r--r-- | user/trace.c | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/user/trace.c b/user/trace.c new file mode 100644 index 0000000..dd77760 --- /dev/null +++ b/user/trace.c @@ -0,0 +1,27 @@ +#include "kernel/param.h" +#include "kernel/types.h" +#include "kernel/stat.h" +#include "user/user.h" + +int +main(int argc, char *argv[]) +{ + int i; + char *nargv[MAXARG]; + + if(argc < 3 || (argv[1][0] < '0' || argv[1][0] > '9')){ + fprintf(2, "Usage: %s mask command\n", argv[0]); + exit(1); + } + + if (trace(atoi(argv[1])) < 0) { + fprintf(2, "%s: trace failed\n", argv[0]); + exit(1); + } + + for(i = 2; i < argc && i < MAXARG; i++){ + nargv[i-2] = argv[i]; + } + exec(nargv[0], nargv); + exit(0); +} |