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Fix exec'ing ELFs
+14
-16
+14
-16
src/kernel/emulation/linux/process/execve.c
+14
-16
src/kernel/emulation/linux/process/execve.c
···
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char *nl, *interp, *arg;
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char** modargvp;
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int i, j;
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nl = memchr(m.magic_array, '\n', sizeof(m.magic_array));
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if (nl == NULL)
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return -ENOEXEC;
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*nl = '\0';
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for (i = 2; isspace(m.magic_array[i]); i++);
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interp = &m.magic_array[i];
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for (i = 0; !isspace(interp[i]) && interp[i]; i++);
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if (interp[i] == '\0')
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arg = NULL;
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else
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arg = &interp[i];
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if (arg != NULL)
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{
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*arg = '\0'; // terminate interp
···
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if (*arg == '\0')
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arg = NULL; // no argument, just whitespace
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}
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// Count original arguments
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while (argvp[len++]);
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// Allocate a new argvp
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modargvp = (char**) __builtin_alloca(sizeof(void*) * (len+3));
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i = 0;
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modargvp[i++] = mldr_path;
···
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if (arg != NULL)
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modargvp[i++] = arg;
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modargvp[i] = fname;
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// Append original arguments
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for (j = 1; j < len+1; j++)
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modargvp[i+j] = argvp[j];
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argvp = modargvp;
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fname = mldr_path;
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}
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else
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{
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return -ENOEXEC;
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}
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// otherwise, it's a native Linux executable (ELF)
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ret = LINUX_SYSCALL(__NR_execve, fname, argvp, envp);
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if (ret < 0)