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disable inode lock for macos and freebsd

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This commit is contained in:
Yakov Olkhovskiy 2022-09-05 15:41:52 +00:00
parent e12858dca5
commit 1338f7d65e
1 changed files with 10 additions and 2 deletions
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12
utils/self-extracting-executable/decompressor.cpp
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@ -361,6 +361,8 @@ int decompressFiles(int input_fd, char * path, char * name, bool & have_compress
#endif
#if !defined(OS_DARWIN) && !defined(OS_FREEBSD)
uint32_t getInode(const char * self)
{
std::ifstream maps("/proc/self/maps");
@ -386,6 +388,8 @@ uint32_t getInode(const char * self)
return 0;
}
#endif
int main(int/* argc*/, char* argv[])
{
char self[4096] = {0};
@ -409,6 +413,7 @@ int main(int/* argc*/, char* argv[])
else
name = file_path;
#if !defined(OS_DARWIN) && !defined(OS_FREEBSD)
/// get inode of this executable
uint32_t inode = getInode(self);
if (inode == 0)
@ -460,6 +465,7 @@ int main(int/* argc*/, char* argv[])
printf("No target executable - decompression only was performed.\n");
return 0;
}
#endif
int input_fd = open(self, O_RDONLY);
if (input_fd == -1)
@ -522,19 +528,21 @@ int main(int/* argc*/, char* argv[])
if (has_exec)
{
#if !defined(OS_DARWIN) && !defined(OS_FREEBSD)
/// write one byte to the lock in case other copies of compressed are running to indicate that
/// execution should be performed
write(lock, "1", 1);
#endif
execv(self, argv);
/// This part of code will be reached only if error happened
perror("execv");
return 1;
}
#if !defined(OS_DARWIN) && !defined(OS_FREEBSD)
/// since inodes can be reused - it's a precaution if lock file already exists and have size of 1
ftruncate(lock, 0);
#endif
printf("No target executable - decompression only was performed.\n");
}