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| author | Siddhesh Poyarekar <siddhesh@redhat.com> | 2013-05-29 21:30:20 +0530 |
|---|---|---|
| committer | Siddhesh Poyarekar <siddhesh@redhat.com> | 2013-05-29 21:34:12 +0530 |
| commit | b937534868c8d7aec3b6d645bf5fd657bbfccd42 (patch) | |
| tree | 18936faaea13f35bcaf698f97447752c0e1c4567 /sysdeps/generic | |
| parent | d0501bfbe228897c17875fcead8809d017135d6f (diff) | |
| download | glibc-b937534868c8d7aec3b6d645bf5fd657bbfccd42.tar.gz glibc-b937534868c8d7aec3b6d645bf5fd657bbfccd42.tar.xz glibc-b937534868c8d7aec3b6d645bf5fd657bbfccd42.zip | |
Avoid crashing in LD_DEBUG when program name is unavailable
Resolves: #15465 The program name may be unavailable if the user application tampers with argc and argv[]. Some parts of the dynamic linker caters for this while others don't, so this patch consolidates the check and fallback into a single macro and updates all users.
Diffstat (limited to 'sysdeps/generic')
| -rw-r--r-- | sysdeps/generic/ldsodefs.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/sysdeps/generic/ldsodefs.h b/sysdeps/generic/ldsodefs.h index 3f44809802..cb17204259 100644 --- a/sysdeps/generic/ldsodefs.h +++ b/sysdeps/generic/ldsodefs.h @@ -128,6 +128,11 @@ typedef struct link_map *lookup_t; | ((PROT_WRITE | PROT_EXEC) << (PF_W | PF_X) * 4) \ | ((PROT_READ | PROT_WRITE | PROT_EXEC) << ((PF_R | PF_W | PF_X) * 4))) +/* The filename itself, or the main program name, if available. */ +#define DSO_FILENAME(name) ((name)[0] ? (name) \ + : (rtld_progname ?: "<main program>")) + +#define RTLD_PROGNAME (rtld_progname ?: "<program name unknown>") /* For the version handling we need an array with only names and their hash values. */ |