Get information about the user with a given name
#include <sys/types.h> #include <pwd.h> int getpwnam_r( const char* name, struct passwd* pwd, char* buffer, size_t bufsize, struct passwd* result );
Use the -l c option to qcc to link against this library. This library is usually included automatically.
The getpwnam_r() function is a reentrant version of getpwnam(). It gets information about the user with the given name.
If _POSIX_THREAD_SAFE_FUNCTIONS is defined, the getpwnam_r() function updates the passwd structure pointed to by pwd and stores a pointer to that structure at the location pointed by result. The structure contains an entry from the user database with the given name.
The function stores a NULL pointer at the location pointed by result on error or if it can't find the requested entry.
Zero for success, or an error number.
The getpwnam_r() function uses the following functions, and as a result, errno can be set to an error for any of these calls:
POSIX 1003.1 TSF
getlogin(), getpwent(), getpwent_r(), getpwnam(), getpwuid(), getpwuid_r()