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termux-elf-cleaner improvements

This commit is contained in:
Fredrik Fornwall 2015-08-19 21:21:32 -04:00
parent f1cb02a4b1
commit 360e5c42af
1 changed files with 12 additions and 2 deletions
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14
packages/termux-tools/termux-elf-cleaner.cpp
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@ -92,12 +92,20 @@ int main(int argc, char const** argv)
for (int i = 1; i < argc; i++) {
char const* file_name = argv[i];
int fd = open(file_name, O_RDWR);
if (fd < 0) { perror("open()"); return 1; }
if (fd < 0) {
char* error_message;
if (asprintf(&error_message, "open(\"%s\")", file_name) == -1) error_message = (char*) "open()";
perror(error_message);
return 1;
}
struct stat st;
if (fstat(fd, &st) < 0) { perror("fstat()"); return 1; }
if (st.st_size < (long long) sizeof(Elf32_Ehdr)) continue;
if (st.st_size < (long long) sizeof(Elf32_Ehdr)) {
close(fd);
continue;
}
void* mem = mmap(0, st.st_size, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
if (mem == MAP_FAILED) { perror("mmap()"); return 1; }
@ -112,6 +120,8 @@ int main(int argc, char const** argv)
if (bytes[/*EI_DATA*/5] != 1) {
fprintf(stderr, "termux-elf-cleaner: Not little endianness in '%s'\n", file_name);
munmap(mem, st.st_size);
close(fd);
continue;
}