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Oops, fix null termination bug in getpwent().

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This commit is contained in:
Andreas Kling 2018-11-01 16:20:22 +01:00
parent 3a901ae36d
commit 9da4864a9a
Notes: sideshowbarker 2024-07-19 18:34:42 +09:00 
Author: https://github.com/awesomekling
Commit: https://github.com/SerenityOS/serenity/commit/9da4864a9a1
1 changed files with 12 additions and 10 deletions
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22
LibC/pwd.cpp
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@ -7,12 +7,14 @@
extern "C" {
#define PWDB_STR_MAX_LEN 256
struct passwd_with_strings : public passwd {
char name_buffer[256];
char passwd_buffer[256];
char gecos_buffer[256];
char dir_buffer[256];
char shell_buffer[256];
char name_buffer[PWDB_STR_MAX_LEN];
char passwd_buffer[PWDB_STR_MAX_LEN];
char gecos_buffer[PWDB_STR_MAX_LEN];
char dir_buffer[PWDB_STR_MAX_LEN];
char shell_buffer[PWDB_STR_MAX_LEN];
};
static FILE* __pwdb_stream = nullptr;
@ -117,11 +119,11 @@ next_entry:
__pwdb_entry->pw_gecos = __pwdb_entry->gecos_buffer;
__pwdb_entry->pw_dir = __pwdb_entry->dir_buffer;
__pwdb_entry->pw_shell = __pwdb_entry->shell_buffer;
strncpy(__pwdb_entry->name_buffer, e_name.characters(), e_name.length());
strncpy(__pwdb_entry->passwd_buffer, e_passwd.characters(), e_passwd.length());
strncpy(__pwdb_entry->gecos_buffer, e_gecos.characters(), e_gecos.length());
strncpy(__pwdb_entry->dir_buffer, e_dir.characters(), e_dir.length());
strncpy(__pwdb_entry->shell_buffer, e_shell.characters(), e_shell.length());
strncpy(__pwdb_entry->name_buffer, e_name.characters(), PWDB_STR_MAX_LEN);
strncpy(__pwdb_entry->passwd_buffer, e_passwd.characters(), PWDB_STR_MAX_LEN);
strncpy(__pwdb_entry->gecos_buffer, e_gecos.characters(), PWDB_STR_MAX_LEN);
strncpy(__pwdb_entry->dir_buffer, e_dir.characters(), PWDB_STR_MAX_LEN);
strncpy(__pwdb_entry->shell_buffer, e_shell.characters(), PWDB_STR_MAX_LEN);
return __pwdb_entry;
}