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fs_mgr: SkipMountingPartitions() support glob patterns

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Enhance skip_mount.cfg to be able to specify glob patterns.

Bug: 184132970
Test: GSI Boot test
Change-Id: I8e6528e4aff6ea176aa028c3c55d6cedaff3e181
This commit is contained in:
Yi-Yo Chiang 2021-03-31 20:39:22 +08:00 committed by Yo Chiang
parent a2b662cf23
commit 2f2fe4afaf
1 changed files with 22 additions and 11 deletions
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33
fs_mgr/fs_mgr_fstab.cpp
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@ -17,6 +17,7 @@
#include <ctype.h>
#include <dirent.h>
#include <errno.h>
#include <fnmatch.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
@ -767,21 +768,31 @@ bool SkipMountingPartitions(Fstab* fstab, bool verbose) {
return true;
}
for (const auto& skip_mount_point : Split(skip_config, "\n")) {
if (skip_mount_point.empty()) {
std::vector<std::string> skip_mount_patterns;
for (const auto& line : Split(skip_config, "\n")) {
if (line.empty() || StartsWith(line, "#")) {
continue;
}
auto it = std::remove_if(fstab->begin(), fstab->end(),
[&skip_mount_point](const auto& entry) {
return entry.mount_point == skip_mount_point;
});
if (it == fstab->end()) continue;
fstab->erase(it, fstab->end());
if (verbose) {
LINFO << "Skip mounting partition: " << skip_mount_point;
}
skip_mount_patterns.push_back(line);
}
// Returns false if mount_point matches any of the skip mount patterns, so that the FstabEntry
// would be partitioned to the second group.
auto glob_pattern_mismatch = [&skip_mount_patterns](const FstabEntry& entry) -> bool {
for (const auto& pattern : skip_mount_patterns) {
if (!fnmatch(pattern.c_str(), entry.mount_point.c_str(), 0 /* flags */)) {
return false;
}
}
return true;
};
auto remove_from = std::stable_partition(fstab->begin(), fstab->end(), glob_pattern_mismatch);
if (verbose) {
for (auto it = remove_from; it != fstab->end(); ++it) {
LINFO << "Skip mounting mountpoint: " << it->mount_point;
}
}
fstab->erase(remove_from, fstab->end());
return true;
}
#endif